USA 100K Races

Here you can find upcoming 100K races in the USA. Use filters to quickly find races by state, or month.

More races: USA Running Calendar

Date RaceDistanceLocationhf:tax:statehf:tax:monthandyearhf:tax:typerace
03/22/2025The Pistol Ultra100K, 100M, 13.1M, 26.2M, 50K, 50MAlcoa TNtennessee03-marchroadrace
03/29/2025Blue Heron Hundreds100K, 100M, 26.2M, 40MMooresville ALalabama03-marchtrail
04/11/2025Gorge Waterfalls Trail100K, 30K, 50KCascade Locks ORoregon04-apriltrail
04/11/2025Zion Ultras & Trail Half Marathon100K, 100M, 13.1M, 50KApple Valley UTutah04-apriltrail
04/11/2025Desert RATS Trail Running Festival100K, 10K, 13.1M, 50KFruita COcolorado04-apriltrail
04/12/2025Lake McMurtry Run100K, 12K, 25K, 50K, 5KStillwater OKoklahoma04-apriltrail
04/12/2025Leona Divide Trail Runs100K, 100M, 30K, 50M, 55KLake Hughes CAcalifornia04-apriltrail
04/26/2025Wawayanda Trail Fest100K, 13.1M, 50K, 50MHewitt NJnew-jersey04-apriltrail
04/27/2025Jack Bristol Lake Waramaug Ultra Races100K, 50K, 50MNew Preston CTconnecticut04-apriltrail
05/09/2025Traverse City Trail Running Festival100K, 10K, 25K, 50K, 5K, 75KTraverse City MImichigan05-maytrail
05/10/2025Secret Beach 100K/50M100K, 50KGold Beach ORoregon05-maytrail
05/30/2025Yankee Springs Trail Run100K, 10K, 25K, 50KMiddleville MImichigan05-maytrail
05/31/2025Lake to Ocean 100K100KPort Mayaka FLflorida05-maytrail
06/07/2025The Great Divide Ultra100K, 100M, 25K, 50KDivide COcolorado06-junetrail
06/13/2025Under the Moon Ultra100K, 25K, 50KHilo HIhawaii06-junetrail
06/14/2025Kettle Moraine 100100K, 100M, 38M, 50KLaGrange WIwisconsin06-junetrail
06/14/2025Cool Moon 100 Mile Endurance Run100K, 100M, 11.5M, 13.5M, 25M, 50M, 5KCool CAcalifornia06-junetrail
06/14/2025Kaniksu 50100K, 13.1M, 29K, 50K, 50MFrater Lake WAwashington06-junetrail
06/20/2025Orange Curtain100K, 10K, 12H, 24H, 26.2M, 30K, 50K, 6HCerritos CAcalifornia06-juneroadrace
06/21/2025Ring the Springs100K, 30K, 50KColorado Springs COcolorado06-junetrail
07/11/2025Silverheels Trail Runs100K, 100M, 10M, 18M, 50M, 60KComo COcolorado07-julytrail
07/12/2025Ironstone 100K Ultra100KHollidaysburg PApennsylvania07-julytrail
07/12/2025Vero Beach Octopus Ultra100K, 100M, 50K, 50MVero Beach FLflorida07-julytrail
07/12/2025Siskiyou Out Back Running Festival100K, 15K, 50K, 50MAshland ORoregon07-julytrail
07/12/2025Beaverhead Endurance Runs100K, 55KSalmon IDidaho07-julytrail
07/19/2025Big Butts Trail100K, 25K, 50KJackson MSmississippi07-julytrail
07/26/2025Tushars Mountain Runs100K, 13.1M, 26.2M, 70KBeaver UTutah07-julytrail
08/02/2025Waldo 100K100KOakridge ORoregon08-augusttrail
08/02/2025Badger Trail Races100K, 100M, 13.1M, 26.2M, 50K, 50MBelleville WIwisconsin08-augusttrail
08/09/2025Kat’cina Mosa 100K Mountain Run100KSpringville UTutah08-augusttrail
08/15/2025Bryre-Baby Dragon100K, 100M, 40K, 40MBlairsville GAgeorgia08-augusttrail
08/16/2025Twisted Branch Trail Run100KNaples NYnew-york08-augusttrail
08/16/2025Bad Dawg Trail100K, 12M, 50K, 50MWaynesville MOmissouri08-augusttrail
08/16/2025Olympic Mountains Trail Races100K, 25K, 50KQuilcene WAwashington08-augusttrail
08/30/2025Wildcat Ultras100K, 100M, 15M, 50K, 50MPensacola FLflorida08-augusttrail
08/30/2025Booneville Backroads Ultra100K, 100M, 10K, 50KBooneville IAiowa08-augusttrail
09/05/2025Dark Divide Trail Races100K, 100M, 15M, 50KRandle WAwashington09-septembertrail
09/06/2025Hurricane 100K100KHurricane WVwest-virginia09-septembertrail
09/06/2025Pine Creek Challenge100K, 100M, 26.2M, 50MWellsboro PApennsylvania09-septembertrail
09/13/2025Iron Will 100100K, 100M, 36H, 50K, 50MJunction City KSkansas09-septembertrail
09/13/2025Boulder Field 100100K, 18M, 50KJim Thorpe PApennsylvania09-septembertrail
09/13/2025Plain Endurance Runs100K, 100MLeavenworth WAwashington09-septembertrail
09/20/2025Soldier Cutoff Hillduro – Run100KPisgah IAiowa09-septembertrail

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