Idaho Mountain Trail Ultra Festival (IMTUF 100)
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About the race
The 15th Annual IMTUF 100 is scheduled for September 19-20, 2026, with start and finish at Jug Mountain Ranch in McCall, Idaho. The race uses the SUPERCOURSE route and follows the same course flow and direction used from 2020 through 2025. The event takes place in the Salmon River Mountains.
Organizers describe the main event as a "post-doctoral level" mountain race and advise that participants research the route and maintain appropriate training before registering. The event materials include information on registration, crew and pacer rules and directions, qualifiers and qualifications, race policy, photos, and contact details.
Multiple race options are noted on event pages, including:
- IMTUF 100
- IMTUF 20 Mile
- 100 MI SUPERCOURSE at Jug Mountain Ranch
Since 2012 the IMTUF trails have been run with permission from the Payette National Forest McCall Ranger District and the Idaho Department of Lands. Visit the organization's website for the most recent information.
