Ultramarathon
IMTUF 100
IMTUF 100 is a rugged mountain hundred around McCall, combining remote Idaho singletrack, sustained climbing and a deeply established ultra community.
Next raceSaturday, September 19, 2026
Distance categoryUltramarathon
LocationMcCall, Idaho
Quick facts
- Rugged Idaho mountain hundred
- Remote singletrack and long climbs
- Qualification standards for entry
- Payette high country around McCall
About the IMTUF 100
The Idaho Mountain Trail Ultra Festival centers on one separately timed 100-mile race with its own qualification standards and results archive.
Course
Technical mountain trail, forest roads and high-country climbs create a demanding loop through the Payette region around McCall.
Race-day weather
Mid-September can shift from warm sun to freezing overnight temperatures, rain or early snow in the Idaho mountains.
Past IMTUF 100 dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Saturday, September 19, 2026 | Upcoming | — |
| 2025 | — | Completed | Open results |
| 2024 | — | Completed | Open results |
IMTUF 100 FAQ
When is the IMTUF 100?
The 2026 IMTUF 100 is on Saturday, September 19, 2026.
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