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Ultramarathons in Idaho

All 31 ultramarathons in Idaho, from 50K to 200 miles, with the climb, the cutoff and the date for each. Every race links to its own page, where you can see how it fits the runner you are now.

RaceDistanceWhereDateClimbCutoff
IMTUF 100 - Idaho Mountain Trail Ultra Festival100 MilesMcCall, IDSep 19, 202622,000 ft36 h
Race the Rocks – 50K Mountain Challenge50 KMAlmo, IDSep 19, 2026—11 h
Bogus 50 km Race50 KMBoise, IDSep 26, 20265,600 ft10.5 h
Bogus Race50 MilesBoise, IDSep 26, 20267,600 ft16 h
Legends Never Die55 KMKetchum, IDOct 3, 20267,000 ft10 h
Moscow Mountain Madness50 KMMoscow, IDOct 4, 20265,500 ft10 h
Sasquatch Shuffle50 KMMcCall, IDOct 10, 2026—10 h
Fall Creek Beast50 KMSwan Valley, IDOct 31, 20266,000 ft9 h
Dizzy Horse A Winter Backyard UltraBackyard (4.167-mile yards)Idaho Falls, IDJan 8, 202780 ft—
Wilson Creek Frozen 50K50 KMMelba, IDJan 23, 20275,600 ft11 h
Pulse Endurance Runs (Pickled Feet)100 MilesEagle, IDMar 19, 2027—32 h
Spitfire Ultra Trail Challenge55 KMMenan, IDApr 17, 20276,600 ft9 h
Weiser River Trail50 KMBoise, IDApr 24, 2027—9 h
Heavens Gate Ultra32.9 miRiggins, IDMay 1, 20272,500 ft9.5 h
Boise Greenbelt Relays45 MilesBoise, IDMay 8, 2027——
Scout Mountain Ultra Trail100 MilesPocatello, IDJun 4, 202722,276 ft36 h
Scout Mountain Ultra Trail50 KMPocatello, IDJun 5, 20277,503 ft16.5 h
Scout Mountain Ultra Trail50 MilesPocatello, IDJun 5, 202711,300 ft18 h
Race the Wolf32.3 miSandpoint, IDJun 19, 2027—9 h
River of No Return Endurance Run 53K55 KMChallis, IDJun 19, 20279,300 ft14 h
River of No Return Endurance Run108 KMChallis, IDJun 19, 202717,000 ft22 h
McCall Trailrunning Classic50 KM 2023 New CourseMcCall, IDJun 26, 20276,000 ft12.5 h
To Bone and Back40 MilesIdaho Falls, IDJun 26, 2027—11 h
Beaverhead Endurance Runs55 KMSalmon, IDJul 10, 2027—9.5 h
Beaverhead Endurance Runs100 KMSalmon, IDJul 10, 202712,700 ft19 h
Standhope100 MilesKetchum, IDJul 24, 202723,000 ft41 h
Standhope60 KMKetchum, IDJul 24, 20279,787 ft14 h
Owyhee 50/50 Night Run50 KMHomedale, IDJul 30, 2027—9 h
Owyhee 50/50 Night Run50 MilesHomedale, IDJul 30, 2027—13.5 h
Harriman Park 50k50 KMIsland Park, IDAug 14, 20272,000 ft9 h
If You're Not First, You're Last Backyard UltraBackyard (4.167-mile yards)Eagle, IDSep 10, 2027——