Races in Colorado

Upcoming races in Colorado. Use filters to quickly find races by distance, city, month or race type.

More races: USA running calendar

Date RaceDistanceCityhf:tax:distancecategoryhf:tax:cityhf:tax:typeracehf:tax:monthandyear
05/18/2024Habitat Archuleta’s 15 Homes in 5K Fun Run5KPagosa Springs CO5kpagosa-springs-coroadrace05-may
05/18/2024Memorial Day Run & March: To Help Feed Homeless Veterans10K, 30K, 5KCastle Rock CO10k 5k half-marathon-to-full-marathoncastle-rock-coroadrace05-may
05/18/2024Endure Trail Runs10K, 12H, 13.1M, 24HDivide CO10k half ultradivide-cotrail05-may
05/18/2024Guardian Games & ExpoWindsor COwindsor-coroadrace05-may
05/18/2024Spirit Challenge Run for Autism10K, 5KSteamboat Springs CO10k 5ksteamboat-springs-coroadrace05-may
05/18/2024Canine On the Creek 5K1M, 5KDumont CO5kdumont-coroadrace05-may
05/18/2024Denver Metro 5K Run5KDenver CO5kdenver-coroadrace05-may
05/18/2024Ram Party 50M13.1M, 26.2M, 50K, 54M, 5K, 9MColorado Springs CO10k-to-half-marathon 5k half marathon ultracolorado-springs-cotrail05-may
05/18/2024Denver Colfax Marathon10M, 13.1M, 26.2MDenver CO10k-to-half-marathon half marathondenver-coroadrace05-may
05/19/2024Healing Warriors 3rd Annual 5K5KFort Collins CO5kfort-collins-coroadrace05-may
05/19/2024Miles for Smiles 5K5KArvada CO5karvada-coroadrace05-may
05/25/2024Weld Your Mettle Running Event7KEaton COeaton-coroadrace05-may
05/25/2024The Valley Bottom Rio Trio5KAlamosa CO5kalamosa-coroadrace05-may
05/26/2024Narrow Gauge 10M10M, 5KDurango CO5k half-marathon-to-full-marathondurango-coroadrace05-may
05/26/2024Spirit Trail Race13.1M, 26.2M, 8KBuena Vista COhalf marathonbuena-vista-cotrail05-may
05/27/2024Annual Angel Run at Red Leg Brewing10K, 5KColorado Springs CO10k 5kcolorado-springs-coroadrace05-may
05/27/2024Memorial Day 5K Fun Run5KPueblo CO5kpueblo-coroadrace05-may
05/27/2024BOLDERBoulder 10K10KBoulder CO10kboulder-coroadrace05-may
06/01/2024CKF UNBOUND Gravel100M, 200MAspen COultraaspen-coroadrace06-june
06/01/2024Aiden’s Adventure 5K5KColorado Springs CO5kcolorado-springs-coroadrace06-june
06/01/20246 Dot Dash 5K5KLittleton CO5klittleton-coroadrace06-june
06/01/2024StepUp For Women And Recovery 5K5KFort Collins CO5kfort-collins-coroadrace06-june
06/01/2024Leadville Turquoise Lake 20K20KLeadville CO10k-to-half-marathonleadville-cotrail06-june
06/01/2024Mace’s Hideout 100100M, 50MBeulah COultrabeulah-cotrail06-june
06/01/2024Mountain Ridge Trail Race10K, 13.1M, 21M, 5KHighlands Ranch CO10k 5k half ultrahighlands-ranch-cotrail06-june
06/01/2024Mountain Ridge Trail Race10K, 13.1M, 21M, 5KHighlands Ranch CO10k 5k half half-marathon-to-full-marathonhighlands-ranch-cotrail06-june
06/01/2024Basalt Half Marathon13.1MBasalt COhalfbasalt-coroadrace06-june
06/01/2024North Fork Trail 50 Mile/50K50K, 50MBuffalo Creek COultrabuffalo-creek-cotrail06-june
06/01/2024The Great Divide Ultra100K, 100M, 25K, 50KDivide COhalf-marathon-to-full-marathon ultradivide-cotrail06-june
06/01/2024Revel Rockies Marathon13.1M, 26.2MDenver COhalf marathondenver-coroadrace06-june
06/02/2024Steamboat Springs Marathon10K, 13.1M, 26.2MSteamboat Springs CO10k half marathonsteamboat-springs-coroadrace06-june
06/02/2024Stepping Stone 5K5KLittleton CO5klittleton-coroadrace06-june
06/02/2024Flamingo Day 5K5KDenver CO5kdenver-coroadrace06-june
06/02/2024Fish Hatchery 5K Trail Run5KLeadville CO5kleadville-cotrail06-june
06/02/2024Crazy Legs 10K Trail Run10KLoveland CO10kloveland-cotrail06-june
06/02/2024Steamboat Marathon10K, 13.1M, 26.2MSteamboat Springs CO10k half marathonsteamboat-springs-coroadrace06-june
06/02/2024Colorado 13er10K, 13.1M, 5KLouisville CO10k 5k halflouisville-coroadrace06-june
06/08/2024Run Against Breast Cancer DENVER10K, 13.1M, 5KAurora CO10k 5k halfaurora-coroadrace06-june
06/08/2024Change the World Run DENVER10K, 13.1M, 5KAurora CO10k 5k halfaurora-coroadrace06-june
06/08/2024Pueblo Levee 5K5KPueblo CO5kpueblo-coroadrace06-june
06/08/2024Ovid Days Color Run5KOvid CO5kovid-coroadrace06-june
06/08/2024Unicorn 5K & Festival (West)5KLittleton CO5klittleton-coroadrace06-june
06/08/2024Steamworks Half Marathon13.1MDurango COhalfdurango-coroadrace06-june
06/08/2024Creede Donkey Dash10M, 3MCreede CO10k-to-half-marathon half-marathon-to-full-marathoncreede-coroadrace06-june
06/08/2024All-Out Summer Breeze Half Marathon10K, 13.1M, 5KArvada CO10k 5k halfarvada-coroadrace06-june
06/09/2024The Big Run 5K – A Global Running Day Celebration5KDenver CO5kdenver-coroadrace06-june
06/09/2024Garden of the Gods 10M Trail Run10K, 10MColorado Springs CO10k half-marathon-to-full-marathoncolorado-springs-cotrail06-june
06/15/2024Billy Cordova Memorial Park 5K & Family Fun5KBuena Vista CO5kbuena-vista-coroadrace06-june
06/15/2024Howelsen Hill Trail Run4M, 8MSteamboat Springs CO10k-to-half-marathon half-marathon-to-full-marathonsteamboat-springs-cotrail06-june
06/15/2024Cuchara Trail Runs15M, 50M, 5M, 60KLa Veta CO10k-to-half-marathon marathon ultrala-veta-cotrail06-june
06/15/2024Sierra’s 5K Run Race Against Meningitis5KLoveland CO5kloveland-coroadrace06-june
06/15/2024WineRun Denver at Salt & Acres5KFort Lupton CO5kfort-lupton-coroadrace06-june
06/15/2024Parker Parks and Recreation Cattle Crossing 5K5KParker CO5kparker-coroadrace06-june
06/15/2024Estes Park Marathon and Half Marathon13.1M, 26.2M, 5MEstes Park COhalf marathonestes-park-coroadrace06-june
06/16/2024Father’s Day Classic10K, 5KArvada CO10k 5karvada-coroadrace06-june
06/22/2024Unicorn 5K (North)5KThornton CO5kthornton-coroadrace06-june
06/22/2024Denver Pride 5K5KDenver CO5kdenver-coroadrace06-june
06/22/2024Red, White and Brew10K, 12H, 13.1M, 5KWindsor CO10k 5k half ultrawindsor-coroadrace06-june
06/22/2024Slacker Half Marathon-Relay-4-Mile Races13.1M, 4MGeorgetown COhalfgeorgetown-coroadrace06-june
06/22/2024Ring the Springs100K, 100M, 25K, 50KColorado Springs COhalf-marathon-to-full-marathon ultracolorado-springs-cotrail06-june
06/23/2024Sunset Trail Running Festival12K, 28K, 5KBoulder CO10k-to-half-marathon 5k half-marathon-to-full-marathonboulder-cotrail06-june
06/23/2024Blue Sky Ascent & Round Trip14.5MIdaho Springs COmarathonidaho-springs-coroadrace06-june
06/23/2024Annual Buffs4Life Kyle MacIntosh Memorial 5K Run5KBoulder CO5kboulder-coroadrace06-june
06/29/2024Firecracker 4 & 8 Mile – Colorado Springs4M, 8MColorado Springs CO10k-to-half-marathon half-marathon-to-full-marathoncolorado-springs-coroadrace06-june
06/29/2024Before The Fourth 5K5KLittleton CO5klittleton-coroadrace06-june
06/29/2024Fitness Expo On Tap at the Colorado Tap House5KArvada CO5karvada-coroadrace06-june
06/29/2024NoCo All-Comers Track Meet Series5KLoveland CO5kloveland-coroadrace06-june
06/29/2024Freedom 4M4MLone Tree CO10k-to-half-marathonlone-tree-coroadrace06-june
06/30/2024Firecracker 4 & 8 Mile – Denver4M, 8MDenver CO10k-to-half-marathondenver-coroadrace06-june
07/04/2024ROCK-IT Run Half Marathon 5K & Relay13.1M, 5KCastle Rock CO5k halfcastle-rock-coroadrace07-july
07/04/2024Palmer Lake July 4 Fun Run4MPalmer Lake CO10k-to-half-marathonpalmer-lake-coroadrace07-july
07/04/2024HRCA Independence Day 5K5KLittleton CO5klittleton-coroadrace07-july
07/04/2024Burro Buster 5K5KFairplay CO5kfairplay-coroadrace07-july
07/04/2024Let Freedom Run10K, 5KLouisville CO10k 5klouisville-coroadrace07-july
07/04/2024Loveland Liberty 5K5KLoveland CO5kloveland-coroadrace07-july
07/04/2024Rendezvous Run for Independence 5K5KWinter Park CO5kwinter-park-coroadrace07-july
07/04/2024FireKracker 5K5KFort Collins CO5kfort-collins-coroadrace07-july
07/04/2024Greeley Freedom 5K5KGreeley CO5kgreeley-coroadrace07-july
07/04/2024Leadville Firecracker 5K5KLeadville CO5kleadville-coroadrace07-july
07/04/2024Longmont Half Marathon13.1M, 5KLongmont CO5k halflongmont-coroadrace07-july
07/04/2024July 4th ROCK-IT Run13.1M, 1K, 5KCastle Rock CO5k halfcastle-rock-coroadrace07-july
07/06/2024Silverton Alpine Marathons26.2M, 50M, 8MSilverton CO10k-to-half-marathon marathon ultrasilverton-cotrail07-july
07/06/2024Pagosa Duathlon3M, 6MPagosa Springs CO10k-to-half-marathonpagosa-springs-cotrail07-july
07/06/2024Hahns Peak Vertical Trail Race8MClark COhalf-marathon-to-full-marathonclark-cotrail07-july
07/06/2024Sheep Creek Triathlon1MAntonito COantonito-coroadrace07-july
07/07/2024Kendall Mountain Run11K, 12MSilverton CO10k-to-half-marathonsilverton-cotrail07-july
07/12/2024Silverheels Trail Runs100K, 100M, 10M, 18M, 50M, 60KComo COhalf-marathon-to-full-marathon ultracomo-cotrail07-july
07/13/2024Cookie Chase 5K5KDenver CO5kdenver-coroadrace07-july
07/13/2024Poudre Trail Days5KGreeley CO5kgreeley-cotrail07-july
07/13/2024I Can 5K10K, 5KBrighton CO5kbrighton-coroadrace07-july
07/13/2024All-Out Dog Days Half Marathon10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-coroadrace07-july
07/13/2024Aspen Valley Marathon13.1M, 26.2M, 5KAspen CO5k half marathonaspen-cotrail07-july
07/14/2024Greenland Open Space Pack Burro Races presented by Double Rainbow Ranch4M, 8MLarkspur CO10k-to-half-marathon half-marathon-to-full-marathonlarkspur-coroadrace07-july
07/14/2024Barr Lake15K, 30KBrighton CO10k-to-half-marathon half-marathon-to-full-marathonbrighton-coroadrace07-july
07/14/2024Barr Lake Half Marathon15K, 30KBrighton CO10k-to-half-marathon half-marathon-to-full-marathonbrighton-cotrail07-july
07/19/2024High Lonesome100MNathrop COultranathrop-cotrail07-july
07/19/2024Ouray 100 Mile Endurance Run100MOuray COultraouray-cotrail07-july
07/20/2024The Hero’s Journey 5K5KAurora, CO5kaurora coroadrace07-july
07/20/2024Spring Creek Memorial Trail Run5K, 9.5MSteamboat Springs CO5k half-marathon-to-full-marathonsteamboat-springs-cotrail07-july
07/20/2024Audi Power of Four Trail Run10K, 25K, 50KAspen CO10k half-marathon-to-full-marathon marathonaspen-cotrail07-july
07/20/2024Summer Splash Prairie Dog Half10K, 13.1M, 5KCastle Rock CO10k 5k halfcastle-rock-coroadrace07-july
07/20/2024Summer Sizzler- Colorado Springs10K, 15K, 5KColorado Springs CO10k 10k-to-half-marathon 5kcolorado-springs-coroadrace07-july
07/20/2024Heritage Eagles 5K5KLittleton CO5klittleton-coroadrace07-july
07/20/2024Box Canyon Trail Races10M, 30KTelluride CO10k-to-half-marathon half-marathon-to-full-marathontelluride-cotrail07-july
07/20/2024Summer Splash Prairie Dog Half Marathon10K, 13.1M, 5KCastle Rock CO10k 5k halfcastle-rock-coroadrace07-july
07/21/2024Barr Trail Mountain Race12.6MManitou Springs COhalf-marathon-to-full-marathonmanitou-springs-cotrail07-july
07/21/2024Summer Sizzler- Denver10K, 15K, 5KWestminster CO10k 10k-to-half-marathon 5kwestminster-coroadrace07-july
07/26/2024Sundown XC3K, 5KAurora CO5kaurora-coroadrace07-july
07/27/2024Pirates Run for Booty5KThornton CO5kthornton-coroadrace07-july
07/27/2024Living Journeys Summit Hike & Trail Runs11.5MCrested Butte COhalf-marathon-to-full-marathoncrested-butte-cotrail07-july
07/27/2024Rocky Mountain 5K5KColorado Springs CO5kcolorado-springs-coroadrace07-july
07/28/2024Dash for Smiles5KDenver CO5kdenver-coroadrace07-july
07/28/2024Spirit of the West 5K5KGolden CO5kgolden-coroadrace07-july
07/28/2024World Championship Pack Burro Race15M, 29MFairplay COultrafairplay-coroadrace07-july
08/02/2024Annual Wild West Relay200MFort Collins COultrafort-collins-coroadrace08-august
08/02/2024New Castle Dirty Dozen Race10KNew Castle CO10knew-castle-cotrail08-august
08/02/2024Rocky Mountain Half Marathon13.1M, 5KEstes Park CO5k halfestes-park-coroadrace08-august
08/03/2024Boulder Rez Marathon10K, 13.1M, 19.7M, 26.2MBoulder CO10k half half-marathon-to-full-marathon marathonboulder-coroadrace08-august
08/03/2024Flying Colors 5K Fun Run5KCraig CO5kcraig-coroadrace08-august
08/03/2024Unicorn 5K (South)5KHighlands Ranch CO5khighlands-ranch-coroadrace08-august
08/03/2024Arapahoe Warrior 5K5KCentennial CO5kcentennial-coroadrace08-august
08/03/2024Kennebec Mountain Run15MHesperus COultrahesperus-cotrail08-august
08/03/2024Sheep Mountain Trail Runs13.1M, 50K, 50MFairplay COhalf marathon ultrafairplay-cotrail08-august
08/03/2024All-Out Runapalooza Half Marathon10K, 13.1M, 5KArvada CO10k 5k halfarvada-coroadrace08-august
08/04/2024Evergreen Town Race10K, 5KEvergreen CO10k 5kevergreen-coroadrace08-august
08/04/2024Emerald Mountain Epic Marathon10K, 13.1M, 26.2MSteamboat Springs COhalf marathonsteamboat-springs-cotrail08-august
08/06/2024Eltuck Valley 5K5KBellvue CO5kbellvue-coroadrace08-august
08/09/2024Choice City Running Festival10K, 13.1M, 5KFort Collins CO10k 5k halffort-collins-coroadrace08-august
08/10/2024Georgetown to Idaho Springs Half Marathon13.1MGeorgetown COhalfgeorgetown-coroadrace08-august
08/10/2024Run the Rockies Trail Race10K, 13.1MFrisco CO10k halffrisco-cotrail08-august
08/10/2024Holy COW Trail Stampede10K, 5KWestminster CO10k 5kwestminster-cotrail08-august
08/10/2024Hometown Half Marathon – Colorado Springs10K, 13.1M, 5KColorado Springs CO10k 5k halfcolorado-springs-coroadrace08-august
08/10/2024Human Race Half Marathon10K, 13.1M, 1M, 5KFort Collins CO10k 5k halffort-collins-coroadrace08-august
08/11/2024Annual Eye Love Logan and Zoe 5K and Silent Auction5KWestminster CO5kwestminster-coroadrace08-august
08/11/2024Hometown Half Marathon – Denver10K, 13.1M, 5KWestminister CO10k 5k halfwestminister-coroadrace08-august
08/13/2024Into the Hills Eltuck 10K10KBellvue CO10kbellvue-coroadrace08-august
08/15/2024Eldorado Run for the Cure2M, 4MEldorado Springs CO10k-to-half-marathoneldorado-springs-coroadrace08-august
08/17/2024Valley 50005KLoveland CO5kloveland-coroadrace08-august
08/17/2024Impact Uganda10K, 5KDenver CO10k 5kdenver-coroadrace08-august
08/17/2024Dynafit Half Marathon & 5K13.1M, 5KVail CO5k halfvail-cotrail08-august
08/17/2024CKF Leadville Trail 100 Run100MAspen COultraaspen-cotrail08-august
08/17/2024The Cheyenne Mountain Run10K, 25K, 5KColorado Springs CO10k 5k half-marathon-to-full-marathoncolorado-springs-cotrail08-august
08/17/2024Mt Sneffels Marathon10K, 13.1MOuray CO10k halfouray-coroadrace08-august
08/18/2024Erie Half13.1M, 5KErie CO5k halferie-coroadrace08-august
08/20/2024Into the Hills Eltuck 5K5KBellvue CO5kbellvue-coroadrace08-august
08/24/2024Adeo’s Walk, Run or Roll VIRTUALGreeley COgreeley-coroadrace08-august
08/24/2024Westminster Trail Race10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-cotrail08-august
08/24/2024Protect The Children 5K5KColorado Springs CO5kcolorado-springs-coroadrace08-august
08/24/2024Severance Days 5K5KSeverance CO5kseverance-coroadrace08-august
08/24/2024Byers Peak Stampede Half Marathon13.1M, 5KWinter Park CO5k halfwinter-park-coroadrace08-august
08/24/2024Continental Divide Trail Run16M, 50K, 5MSteamboat Springs CO10k-to-half-marathon marathon ultrasteamboat-springs-cotrail08-august
08/24/2024TBK Bank Thirsty 13 Half Marathon13.1MDurango COhalfdurango-coroadrace08-august
08/24/2024Staunton Rocks! Marathon & Half Marathon13.1M, 26.2MPine COhalf marathonpine-cotrail08-august
08/24/2024Thirsty 13 Half Marathon13.1MDurango COhalfdurango-coroadrace08-august
08/24/2024Winter Park Half Marathon13.1M, 5KWinter Park CO5k halfwinter-park-cotrail08-august
08/24/2024Westminster Trail Race10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-cotrail08-august
08/27/2024Eltuck Valley 12K12KBellvue CO10k-to-half-marathonbellvue-coroadrace08-august
08/31/2024South Fork Alder Ass Race11M, 3MSouth Fork CO10k-to-half-marathon half-marathon-to-full-marathonsouth-fork-coroadrace08-august
08/31/2024Donot Stop – Denver10K, 5KDenver CO10k 5kdenver-coroadrace08-august
08/31/2024Creede Mountain Run12M, 22M, 2M, 50KCreede CO10k-to-half-marathon half-marathon-to-full-marathon ultracreede-cotrail08-august
08/31/2024Donot Stop – Colorado Springs10K, 5KColorado Springs CO10k 5kcolorado-springs-coroadrace08-august
08/31/2024Grand Traverse Mountain Run40MCrested Butte COultracrested-butte-cotrail08-august
09/01/2024Wine Run 5k at The Winery at Holy Cross Abbey5KCañon City CO5kcanon-city-coroadrace09-september
09/01/202410K at 10,000 Feet Trail Run10K, 5KSteamboat Springs CO10k 5ksteamboat-springs-cotrail09-september
09/01/2024Orangetheory 5K at Labor Day Lift Off5KColorado Springs CO5kcolorado-springs-coroadrace09-september
09/02/2024Labor Day Half Marathon10K, 13.1M, 5KParker CO10k 5k halfparker-coroadrace09-september
09/04/2024Roost Rebellion Relays4MDenver CO10k-to-half-marathondenver-coroadrace09-september
09/06/2024American Heroes Run100M, 13.1M, 24H, 26.2M, 5K, 9.11M, 9HLongmont CO5k half marathon ultralongmont-coroadrace09-september
09/06/2024Flaming Foliage Relay – Idaho Springs to Buena Vista165MIdaho Springs COultraidaho-springs-cotrail09-september
09/07/2024RexRun For PAWSitivity 5K Trail Run5KAurora CO5kaurora-cotrail09-september
09/07/2024Sloan’s Lake Search Party Marathon26.2MDenver COmarathondenver-coroadrace09-september
09/07/2024Devil on the Divide22K, 50KEmpire COhalf ultraempire-cotrail09-september
09/07/2024Cirque Series – Arapahoe Basin8MKeystone COhalf-marathon-to-full-marathonkeystone-coroadrace09-september
09/07/2024The Gunni Grinder120M, 30M, 60MGunnison COultragunnison-coco gunnison trail09-september
09/07/2024Cirque Series – Arapahoe Basin8.8MArapahoe Basin CO10k-to-half-marathonarapahoe-basin-cotrail09-september
09/07/2024Imogene Pass Run17.1MOuray COhalf-marathon-to-full-marathonouray-cotrail09-september
09/07/2024Black Squirrel Half Marathon13.1MFort Collins COhalffort-collins-cotrail09-september
09/13/2024Run Rabbit Run100M, 50MSteamboat Springs COultrasteamboat-springs-cotrail09-september
09/14/2024Cerus Fitness Festival0.25MLa Salle COla-salle-coroadrace09-september
09/14/2024The Denver 5K5KDenver CO5kdenver-coroadrace09-september
09/14/2024Trail Sisters Women’s Half Marathon10K, 13.1MBuena Vista CO10k halfbuena-vista-cotrail09-september
09/14/2024All-Out Fall Fest10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-coroadrace09-september
09/14/2024Jag Jog 5K Race and 1-Mile Family Dash5KBroomfield CO5kbroomfield-coroadrace09-september
09/14/2024The Denver 5K5KDenver CO5kdenver-coroadrace09-september
09/14/2024Meadowgold Trail Run10K, 5KMinturn CO10k 5kminturn-cotrail09-september
09/14/2024Spirit of the Valley 5K5KGrand Junction CO5kgrand-junction-coroadrace09-september
09/14/2024Blisters & Brews 5K5KTelluride CO5ktelluride-coroadrace09-september
09/14/2024HRCA Oktoberfest 5K5KLittleton CO5klittleton-coroadrace09-september
09/14/2024All-Out Fallfest Marathon10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-cotrail09-september
09/15/2024Farmers 50005KWheat Ridge CO5kwheat-ridge-coroadrace09-september
09/15/2024Flyin’ Lion 5K5KLittleton CO5klittleton-coroadrace09-september
09/15/2024Nun Run13.1M, 1M, 5KCentennial CO5k halfcentennial-coroadrace09-september
09/20/2024Red Feather Trail Jamboree13.1M, 50K, 50MRed Feather Lakes COhalf ultrared-feather-lakes-cotrail09-september
09/21/2024Pikes Peak Ascent and Marathon13.32MManitou Springs COhalfmanitou-springs-cotrail09-september
09/21/2024Miles 4 Madison 5K1K, 5KLittleton CO5klittleton-coroadrace09-september
09/21/2024Move Forward 5K & 10K10K, 5KDenver CO10k 5kdenver-coroadrace09-september
09/21/2024Ouray Mountain Trail Run13MOuray COhalfouray-cotrail09-september
09/21/2024Snow Mountain Ranch Trail Festival10K, 13.1M, 50K, 5KGranby CO10k 5k half ultragranby-cotrail09-september
09/21/2024So Long to Summer 5K and 10K10K, 5KParker CO10k 5kparker-cotrail09-september
09/21/2024Superhero Event10K, 1M, 5KGreeley CO10k 5kgreeley-coroadrace09-september
09/21/2024Beulah Challenge10K, 13.1M, 5KBeulah CO10k 5k halfbeulah-coroadrace09-september
09/21/2024Snow Mtn Ranch Trail Festival10K, 13.1M, 50K, 5KGranby CO10k 5k half ultragranby-cotrail09-september
09/21/2024Parker Parks and Recreation So Long to Summer10K, 5KParker CO10k 5kparker-coroadrace09-september
09/21/2024Battle by the Brook20M, 6MDeckers CO10k-to-half-marathon ultradeckers-cotrail09-september
09/21/2024Annual Superhero Event10K, 5KGreeley CO10k 5kgreeley-coroadrace09-september
09/21/2024Autumn Run Half Marathon, 10K and 5K10K, 13.1M, 5KBuena Vista CO10k 5k halfbuena-vista-coroadrace09-september
09/22/2024Golden Gallop10K, 5KGolden CO10k 5kgolden-coroadrace
09/22/2024Fall Equinox13.1M, 26.2M, 5MFort Collins CO10k-to-half-marathon half marathonfort-collins-coroadrace09-september
09/23/2024Sunlight Showdown Half Marathon13.1MGlenwood Springs COhalfglenwood-springs-cotrail09-september
09/28/2024Prairie Dog Half and 10K/5K10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-coroadrace09-september
09/28/2024West Line Winder 50K30K, 50KBuena Vista COultrabuena-vista-cotrail09-september
09/28/2024Sangre de Cristo Ultras100K, 100M, 150M, 200M, 27K, 50K, 50M, 8MWestcliffe CO10k-to-half-marathon half-marathon-to-full-marathon ultrawestcliffe-cotrail09-september
09/28/2024Bear Chase Race – Half Marathon & 10K100K, 10K, 13.1M, 50K, 50MLakewood CO10k half ultralakewood-cotrail09-september
09/28/2024Golden Leaf Half Marathon13.1MSnowmass Village COhalfsnowmass-village-cotrail09-september
09/28/2024Louisville Trail Race Half Marathon10K, 13.1M, 5KLouisville CO10k 5k halflouisville-cotrail09-september
09/28/2024Sangre de Cristo Trail Festival100K, 100M, 150M, 200M, 27K, 50K, 50M, 8MWestcliffe COhalf-marathon-to-full-marathon marathon ultrawestcliffe-cotrail09-september
09/28/2024HRCA Wildcat Mountain Trail Races10K, 10MLittleton CO10k half-marathon-to-full-marathonlittleton-cotrail09-september
09/28/2024NIGHT NATION RUN – DENVER 5K5KCommerce City CO5kcommerce-city-coroadrace09-september
09/28/2024Pioneer Prairie Dog Half10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-coroadrace09-september
09/28/2024Wildcat Mountain Trail Races10K, 10MLittleton CO10k 10k-to-half-marathonlittleton-cotrail09-september
09/28/2024Rut Run 5K5KEstes Park CO5kestes-park-coroadrace09-september
09/28/2024Emerald Mountain Trail Run12K, 4MSteamboat Springs CO10k-to-half-marathonsteamboat-springs-cotrail09-september
09/28/2024Crested Butte Ultra35K, 50M, 55KCrested Butte COhalf-marathon-to-full-marathon ultracrested-butte-cotrail09-september
09/28/2024Runway 5K – Run for the Angels5KBroomfield CO5kbroomfield-coroadrace09-september
09/28/202424 Hours of Palmer Lake24HPalmer Lake COultrapalmer-lake-cotrail09-september
09/28/2024Colorado Springs Marathon13.1M, 26.2M, 5KColorado Springs CO5k half marathoncolorado-springs-coroadrace09-september
09/29/202414er Fest Races14K, 5KBuena Vista CO5k half-marathon-to-full-marathonbuena-vista-cotrail09-september
09/29/2024Boulderthon10K, 13.1M, 26.2M, 5KBoulder CO10k 5k half marathonboulder-coroadrace09-september
09/29/2024Sawatch Ascent 50K50KNathrop COultranathrop-cotrail09-september
10/04/2024Water For People World Water Classic Virtual Event6KAnywhere, COanywhere coroadrace10-october
10/05/2024Camp 4 Coffee Cart to Cart Trail Race10M, 19MCrested Butte CO10k-to-half-marathon half-marathon-to-full-marathoncrested-butte-cotrail10-october
10/05/2024Hanging Flume 50K50KUravan COultrauravan-cotrail10-october
10/05/2024Not So Flatt Breast Cancer Awareness Run10K, 5KWestminster CO10k 5kwestminster-coroadrace10-october
10/05/2024Rim to Rim Royal Gorge Races13.1M, 5K, 8MCañon City CO5k half half-marathon-to-full-marathoncanon-city-coroadrace trail10-october
10/05/2024Above the Clouds Ultra10K, 50KWoodland Park CO10k ultrawoodland-park-cotrail10-october
10/05/2024Its Fall Yall 5K5KThornton CO5kthornton-coroadrace10-october
10/05/2024Spooky Sprint – Denver10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-coroadrace10-october
10/05/2024West Elk Challenge Trail Marathon26.2MCrawford COmarathoncrawford-cotrail10-october
10/05/2024It’s Fall Y’all 5K5KThornton CO5kthornton-coroadrace10-october
10/06/2024Spooky Sprint – Colorado Springs10K, 13.1M, 5KColorado Springs CO10k 5k halfcolorado-springs-coroadrace10-october
10/06/2024Hot Chocolate Run – Denver10K, 15K, 5KDenver CO10k 10k-to-half-marathon 5kdenver-coroadrace10-october
10/06/2024Windsor Marathon10K, 13.1M, 26.2M, 5KWindsor CO10k 5k half marathonwindsor-coroadrace10-october
10/12/2024Long View Marathon13.1M, 26.2M, 5KFort Collins CO5k half marathonfort-collins-coroadrace10-october
10/12/2024Indian Creek Fifties15M, 50M, 55K, 5MSedalia COhalf-marathon-to-full-marathon ultrasedalia-cotrail10-october
10/12/2024The Long View Marathon13.1M, 26.2M, 5KFort Collins CO5k half marathonfort-collins-coroadrace10-october
10/12/2024Gold Rush Marathon26.2MDurango COmarathondurango-coroadrace10-october
10/12/2024Indian Creek Trail Runs15M, 50M, 55K, 5MSedalia CO10k-to-half-marathon ultrasedalia-cotrail10-october
10/12/2024Sage Burner Trail Race13K, 28K, 50KGunnison CO10k-to-half-marathon half-marathon-to-full-marathon ultragunnison-cotrail10-october
10/13/2024bRUNch Run10K, 5KDenver CO10k 5kdenver-coroadrace10-october
10/13/2024Expo Park XC Runs2K, 3K, 4K, 5KAurora CO5kaurora-cotrail10-october
10/13/2024Go Big or Go Gnome 5K5KLittleton CO5klittleton-coroadrace10-october
10/13/2024The bRUNch Run™10K, 5KDenver CO10k 5kdenver-coroadrace10-october
10/13/2024Westy Half & 5k13.1M, 5KWestminster CO5k halfwestminster-coroadrace10-october
10/19/2024Blue Sky Trail Marathon13.1M, 26.2MFort Collins COhalf marathonfort-collins-cotrail10-october
10/19/2024Great Trailhead Foot Race10M, 5KMorrison CO10k-to-half-marathon 5kmorrison-cotrail10-october
10/19/2024The Great Trailhead Foot Race10M, 5KLakewood CO5k half-marathon-to-full-marathonlakewood-cotrail10-october
10/26/2024Race to Cure Sarcoma – Denver1M, 5KDenver CO5kdenver-coroadrace10-october
10/26/2024Apex Foundation Trick or Trot 5K5KArvada CO5karvada-coroadrace10-october
10/26/2024Foundry Halloween 5K5KSteamboat Springs CO5ksteamboat-springs-coroadrace10-october
10/26/2024Hallowiener 5K5KBuena Vista CO5kbuena-vista-coroadrace10-october
10/27/2024Ghosts and Goblins10K, 5KDenver CO5kdenver-coroadrace10-october
10/27/2024All-Out Kooky-Spooky Half Marathon10K, 13.1M, 5KGolden CO10k 5k halfgolden-coroadrace10-october
11/02/2024Bridge Burner Ultra35K, 35MCañon City COhalf-marathon-to-full-marathon ultracanon-city-cotrail11-november
11/02/2024Bell Ringer 4 Miler4MLoveland COloveland-coroadrace11-november
11/02/2024City Park 5K5KDenver CO5kdenver-coroadrace11-november
11/02/2024HRCA Backcountry Wilderness Half Marathon13.1MLone Tree COhalflone-tree-coroadrace11-november
11/02/2024Colorado 24 Hour Run12H, 24H, 6HFort Collins COultrafort-collins-cotrail11-november
11/02/2024Turkey Trails – Colorado Springs10K, 5KColorado Springs CO10k 5kcolorado-springs-coroadrace11-november
11/02/2024City Park 5K & 1 Mile Walk of Hope for Pancreatic Cancer Research5KDenver CO5kdenver-coroadrace11-november
11/03/2024Turkey Trails – Denver10K, 5KLakewood CO10k 5klakewood-coroadrace11-november
11/09/2024Kessel Run Ultra10M, 20M, 50M, 60KFruita CO10k-to-half-marathon half-marathon-to-full-marathon ultrafruita-cotrail11-november
11/09/2024BINGO! Trail Runs10M, 20M, 42M, 54MByers CO10k-to-half-marathon half-marathon-to-full-marathon ultrabyers-cotrail11-november
11/09/2024Denver Veterans Day Run10K, 5KDenver CO10k 5kdenver-coroadrace11-november
11/16/2024Pumpkin Pie10K, 5KDenver CO10k 5kdenver-coroadrace11-november
11/21/2024Gobble Wobble Run5KLittleton CO5klittleton-coroadrace11-november
11/23/202410K Turkey Trek & 5K Turkey Trot10K, 2K, 5KArvada CO10k 5karvada-coroadrace11-november
11/28/2024BVSC Turkey Trot 5K & Family Fun Run5KBuena Vista CO5kbuena-vista-coroadrace11-november
11/28/2024Parker Parks and Recreation Turkey Day5KParker CO5kparker-coroadrace11-november
11/28/2024Broomfield Turkey Day10K, 5KBroomfield CO10k 5kbroomfield-coroadrace11-november
11/28/2024Pelican Lakes Turkey Trot5KWindsor CO5kwindsor-coroadrace11-november
11/28/2024AdventHealth Avista Louisville Turkey Trot5KLouisville CO5klouisville-coroadrace11-november
11/29/2024Christmas Mountain 5 Mile Run1M, 5MSalida CO10k-to-half-marathonsalida-coroadrace11-november
11/30/2024Colorado Cold Rush Ultra10K, 13.1M, 50KColorado Springs CO10k half ultracolorado-springs-cotrail11-november
12/01/2024RMRR December Trophy Series – 4.5M Race at Denver’s Washington Park4.5MDenver CO10k-to-half-marathondenver-coroadrace12-december
12/07/2024All-Out Fa La La Half Marathon10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-coroadrace12-december
12/07/2024Toy Drop10K, 15K, 5KLoveland CO10k 10k-to-half-marathon 5kloveland-coroadrace12-december
12/07/2024Sawmill Trail Runs16M, 50K, 8MPine CO10k-to-half-marathon half-marathon-to-full-marathon ultrapine-cotrail12-december
12/07/2024Ugly Sweater 1 Miler1MBuena Vista COultrabuena-vista-coroadrace12-december
12/14/2024WinterFest 5K5KDenver CO5kdenver-coroadrace12-december
12/14/2024Santa Catch 5K & 10K10K, 5KWindsor CO10k 5kwindsor-coroadrace12-december
12/14/2024WinterFest 5K & Fun Run5KThornton CO5kthornton-coroadrace12-december
12/15/2024Ugly Sweater 5K5KDenver CO5kdenver-coroadrace12-december
12/21/2024Santa’s Dash for Cash1M, 5KDenver CO5kdenver-coroadrace12-december
12/21/2024Candy Cane Course – Colorado Springs12K, 5KColorado Springs CO10k-to-half-marathon 5kcolorado-springs-coroadrace12-december
12/22/2024Candy Cane Course – Denver12K, 5KWestminster CO10k-to-half-marathon 5kwestminster-coroadrace12-december
01/11/2025All-Out Polar Prowl Half Marathon10K, 13.1M, 5KArvada CO10k 5k halfarvada-coroadrace01-january
01/19/2025Arctic Prairie Dog Half Marathon10K, 13.1M, 5KWestminster CO10k 5k halfwestminster-coroadrace01-january
02/09/2025Super Half Marathon and Game Day 5K13.1M, 5KColorado Springs CO5k halfcolorado-springs-coroadrace02-february
02/15/2025Stories Ultra10K, 13.1M, 15H, 30H, 6HColorado Springs CO10k half ultracolorado-springs-cotrail02-february
02/22/2025All-Out Mardi Crawl 5K, 10K and Half Marathon10K, 13.1M, 5KArvada CO10k 5k halfarvada-cotrail02-february
02/23/2025Highlands Ranch5KHighlands Ranch CO5khighlands-ranch-coroadrace02-february
03/08/2025Run Through Time Trail Marathon13.1M, 26.2M, 2MSalida COhalf marathonsalida-cotrail03-march
04/01/2025Steve’s Event Page5KMorrison CO5kmorrison-coroadrace04-april

Colorado Race Calendars:

5K Races 10K Races
Half Marathons Marathons
Ultra Marathons Trail Races
Denver Colorado Springs
Aurora Fort Collins

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