USA Ultra Marathons in May

Upcoming races with ultra marathon distances in May across the USA. Use filters to quickly find races by state, city or race type.

More races:ย USA running calendar

Date RaceDistanceLocationhf:tax:statehf:tax:cityhf:tax:typerace
05/02/2025Flying Pig Marathon10K, 13.1M, 1M, 26.2M, 50M, 5KCincinnati OHohiocincinnati-ohroadrace
05/03/2025White Lake Ultra12H, 24H, 6HTamworth NHnew-hampshiretamworth-nhtrail
05/03/2025Lost Creek Trail Run10K, 30K, 50K, 5KTrail ORoregontrail-ortrail
05/03/2025Forgotten Forest Ultra Run9HStratford CTconnecticutstratford-cttrail
05/03/2025Chupacabra 5020K, 50M, 53K, 9KQuanah TXtexasquanah-txtrail
05/03/2025Run for Kids Challenge10K, 12HPelham ALalabamapelham-altrail
05/03/2025East Fork Trail Race10K, 13.1M, 20K, 5K, 6HBethel OHohiobethel-ohtrail
05/03/2025Grayson Highlands13.1M, 50K, 50M, 8MGrayson Highlands VAvirginiagrayson-highlands-vatrail
05/03/2025Strolling Jim Run40MWartrace TNtennesseewartrace-tnroadrace
05/04/2025Sisters Country Trail Run13.1M, 50KSisters ORoregonsisters-ortrail
05/05/2025Cocodona 250250MBlack Canyon City AZarizonablack-canyon-city-aztrail
05/05/2025Sedona Canyons 125Jerome AZarizonajerome-aztrail
05/05/2025Elden Crest 3838MFort Tuthill AZarizonafort-tuthill-aztrail
05/07/2025Peak Blood Root Ultra100M, 10M, 200M, 50K, 50MPittsfield VTvermontpittsfield-vttrail
05/09/2025Traverse City Trail Running Festival100K, 10K, 25K, 50K, 5K, 75KTraverse City MImichigantraverse-city-mitrail
05/09/2025Tillamook Burn Trail Run100M, 20M, 50K, 50MTimber ORoregontimber-ortrail
05/10/2025Secret Beach 100K/50M100K, 50KGold Beach ORoregongold-beach-ortrail
05/10/2025Jemez Mountain Trail Runs15M, 50K, 50MLos Alamos NMnew-mexicolos-alamos-nmtrail
05/10/2025Wildflower Trail Run10K, 13.1M, 25K, 26.2M, 50K, 5K, 7MBastrop TXtexasbastrop-txtrail
05/10/2025Flower Moon 50M13.1M, 26.2M, 4M, 50MPawhuska OKoklahomapawhuska-oktrail
05/10/2025Grizzly Peak Trail Run10K, 13.1M, 26.2M, 30K, 50KBerkeley CAcaliforniaberkeley-catrail
05/10/2025Valkyrie Trail Race13.1M, 26.2M, 30K, 4M, 50K, 8MColorado Springs COcoloradocolorado-springs-cotrail
05/10/2025Hoof it on the Hill Half Marathon12K, 26K, 52K, 6KCherry Creek NYnew-yorkcherry-creek-nytrail
05/10/2025Trail Run at Sly Park – Spring Edition10K, 13.1M, 17M, 26.2M, 50K, 5K, 8MPollock Pines CAcaliforniapollock-pines-catrail
05/10/2025Ice Age Trail Run13.1M, 50K, 50MLa Grange WIwisconsinla-grange-witrail
05/10/2025Extraterrestrial Full Moon Midnight10K, 13.1M, 26.2M, 51K, 5KRachel NVnevadarachel-nvroadrace
05/11/2025Dawn To Dusk To Dawn Track Ultras12H, 24H, 50KSharon Hill PApennsylvaniasharon-hill-paroadrace
05/15/2025Infinitus Trail Race100M, 250M, 26.2M, 888K, 88K, 9MRipton VTvermontripton-vttrail
05/16/2025East Texas Ultra14K, 28K, 50K, 7KPittsburg TXtexaspittsburg-txtrail
05/17/2025Camp Challenge5K, 6HAshford CTconnecticutashford-cttrail
05/17/2025Endure Trail Runs10K, 12H, 13.1M, 24HDivide COcoloradodivide-cotrail
05/17/2025Adrenaline Night Runs10K, 15K, 25K, 50K, 6KFountain Hills AZarizonafountain-hills-aztrail
05/17/2025Galena Sky Trail Race4H, 8HGalena ILillinoisgalena-iltrail
05/17/2025O’Neill Park Trail Races10K, 13.1M, 30K, 50KTrabuco Canyon CAcaliforniatrabuco-canyon-catrail
05/17/2025Ram Party15K, 24K, 50K, 55M, 60KColorado Springs COcoloradocolorado-springs-cotrail
05/17/2025Dances With Dirt โ€“ Gnaw Bone10K, 13.1M, 26.2M, 50K, 50M, 5KNashville INindiananashville-intrail
05/18/2025Highball to Thurmond Ultra50K, 50MThurmond WVwest-virginiathurmond-wvtrail
05/23/2025Feel The Burn Trail Runs10K, 20K, 30K, 50KNorth Little Rock ARarkansasnorth-little-rock-artrail
05/24/2025Weld Your Mettle Running Event12H, 24H, 3H, 6H, 9HEaton COcoloradoeaton-coroadrace
05/24/2025Leavenworth Trail Fest27K, 55K, 5KLeavenworth WAwashingtonleavenworth-watrail
05/24/2025Stumptown Trail Runs13.1M, 50KPortland ORoregonportland-ortrail
05/25/2025Wyoming Marathon Races13.1M, 26.2M, 50K, 5KLaramie WYwyominglaramie-wytrail
05/30/2025Reno-Tahoe Odyssey Relay Run Adventure178MReno NVnevadareno-nvroadrace
05/30/2025Yankee Springs Trail Run100K, 10K, 25K, 50KMiddleville MImichiganmiddleville-mitrail
05/31/2025CKF UNBOUND Gravel100M, 200MAspen COcoloradoaspen-coroadrace
05/31/2025Cape Mountain 50K10K, 25K, 50KFlorence ORoregonflorence-ortrail
05/31/2025The Full Mo 50K50KSheridan INindianasheridan-inroadrace
05/31/2025Lake to Ocean 100K100KPort Mayaka FLfloridaport-mayaka-fltrail
05/31/2025Cayuga Trails50K, 50MIthaca NYnew-yorkithaca-nytrail
05/31/2025Momentus Backyard Ultra4MMonroe NCnorth-carolinamonroe-nctrail
05/31/2025Spence Mountain Run13.1M, 30K, 50KKlamath Falls ORoregonklamath-falls-ortrail
05/31/2025Hotfoot Hamster Ultra12H, 24H, 6HBuckeye AZarizonabuckeye-aztrail
05/31/2025North Fork Trail 50 Mile/50K50K, 50MBuffalo Creek COcoloradobuffalo-creek-cotrail
05/31/2025Frio Trail Runs10K, 20K, 30K, 50KLeakey TXtexasleakey-txtrail
05/31/2025Calero Trail Run – Summer10K, 13.1M, 15K, 1M, 25K, 26.2M, 50K, 5KSan Jose CAcaliforniasan-jose-catrail

Choose your favorite distance and save the calendar for later: Half Marathons, Marathons, Ultra Marathons, 5K, 10K, 50K, 50M, 100K, 100M

May Race Calendars:

All Races 5K Races
10K Races Half Marathons
Marathons Trail Races
50K Races 50 Miles Races
100K Races 100 Miles Races

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