Ultra Marathon Races in Idaho
Browse 30 ultra marathon trail running and hiking routes in Idaho. Distance range: 26.4 mi to 71.7 mi. Elevation gain: 4,611 ft to 20,560 ft. Preview each trail in 3D flyover and view segment breakdowns.
Key Takeaways
| Route Name | Location | Distance | Elevation Gain | Type | Race Date |
|---|---|---|---|---|---|
| Duck/Hum Lake 50k | Yellow Pine, Idaho | 32.7 mi | 8,172 ft | race | Sep 19, 2027 |
| Meadow Creek National Recreation Trail | Nez Perce-Clearwater National Forests, Idaho | 26.4 mi | 7,609 ft | route | — |
| Seven Devils Loop (ID) | Idaho County, Idaho | 26.6 mi | 4,820 ft | route | — |
| Foothills Tour | Boise, Idaho | 28.9 mi | 4,611 ft | route | — |
| Lower Foothills Tour | Boise, Idaho | 28.9 mi | 4,611 ft | route | — |
| Lower Foothills Traverse | Ada County, Idaho | 28.9 mi | 4,611 ft | route | — |
| Southern Lemhi Crest Traverse (ID) | Butte County, Idaho | 29.4 mi | 15,682 ft | route | — |
| Diamond > Mormon Gulch > Saddle Tour | Butte County, Idaho | 29.4 mi | 15,682 ft | route | — |
| Seven Devils Loop tagging Dry Diggins Lookout | Idaho County, Idaho | 30.1 mi | 5,976 ft | route | — |
| Jerry Johnson > Grave Peak | Kooskia, Idaho | 31.5 mi | 5,464 ft | route | — |
| Parker, Long and Pyramid Ridge | Boundary County, Idaho | 32.1 mi | 7,985 ft | route | — |
| Sawtooth Loop | Custer County, Idaho | 32.2 mi | 5,983 ft | route | — |
| Sawtooth Loop | Stanley, Idaho | 32.2 mi | 5,982 ft | route | — |
| McConnell to Warm Springs | Nez Perce-Clearwater National Forests, Idaho | 34.0 mi | 7,917 ft | route | — |
| McConnell Mountain > Warm Springs | Nez Perce-Clearwater National Forests, Idaho | 35.7 mi | 8,199 ft | route | — |
| Portneuf Boundary Trail | Caribou County, Idaho | 37.4 mi | 8,626 ft | route | — |
| Starvation Peak Loop | Irwin, Idaho | 39.4 mi | 11,296 ft | route | — |
| Southern Selkirk Traverse (ID) | Boundary County, Idaho | 41.1 mi | 8,373 ft | route | — |
| Hoodoo Mine / Castle Peak | Clayton, Idaho | 43.1 mi | 14,377 ft | route | — |
| Sawtooth Range Traverse | Boise County, Idaho | 43.4 mi | 7,411 ft | route | — |
| Boise Skyline Traverse | Ada County, Idaho | 43.7 mi | 10,318 ft | route | — |
| Boise Skyline Traverse | Ada County, Idaho | 43.7 mi | 10,318 ft | route | — |
| Central Sawtooth Wilderness Loop (ID) | Custer County, Idaho | 45.9 mi | 8,398 ft | route | — |
| Snake River National Recreation Trail (SRNRT) #102 (ID) | Idaho County, Idaho | 50.2 mi | 9,051 ft | route | — |
| Hell's Canyon R2R2R (ID, OR) | Idaho County, Idaho | 51.3 mi | 18,246 ft | route | — |
| The heart of the Sawtooths! | Custer County, Idaho | 56.2 mi | 11,726 ft | route | — |
| River of No Return | Cascade, Idaho | 61.3 mi | 20,560 ft | route | — |
| Boise Grand Slam (ID) | Elmore County, Idaho | 63.8 mi | 11,748 ft | route | — |
| Pocatello Round | Bannock County, Idaho | 69.7 mi | 16,179 ft | route | — |
| Grand Sawtooth Loop (ID) | Boise County, Idaho | 71.7 mi | 14,681 ft | route | — |
Frequently Asked Questions
How many trail races are in Idaho?
There are 1 organized races and 29 self-supported routes available in Idaho.
What is a Ultra Marathon race?
A Ultra Marathon race is approximately 26.2 to 100+ miles in distance.
What is the average elevation gain in Idaho?
The average elevation gain is 9,820 feet, with routes ranging from 4,611 to 20,560 feet.
Can these ultra marathon routes in Idaho be used for hiking?
Yes. 100% of these routes are on trail surfaces, making them suitable for both trail running and hiking. The terrain analysis and elevation profiles help hikers plan their adventures just as effectively as runners.
Are Ultra Marathon races beginner-friendly?
Ultra Marathon race difficulty varies widely. Use the elevation gain and terrain analysis to assess each route. Races with lower elevation gain relative to distance and higher runnable percentages tend to be more beginner-accessible.
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