Course
100 Mile100 mi
Key dates
- ★Race daySeptember 2027 · date to be announced
Provisional date, projected from last year — the organiser has not announced this edition yet. We show the month only.
About
IMTUF 100 is a mountain ultramarathon based in McCall, Idaho, crossing the rugged West Central Mountains of the Payette National Forest. The remote, high-elevation course is known among ultrarunners for its relentless climbing and technical trail.
Your next race, seen from above.
Save IMTUF 100 - Idaho Mountain Trail Ultra Festival to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Save IMTUF 100 - Idaho Mountain Trail Ultra Festival to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Idaho Mountain Trail Ultra Festival
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St. Luke's FitOne Race
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Top of Tamarack
Climbs the mountain at Idaho's Tamarack Resort
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.