What this course demands
Mountainous. The climbs are the race.
- Climbing
- 3,700 m
- Per km
- 22.1 m
- At 5%+
- 12%
- High point
- 3,806 m
Gradient
- under -3%32.6 km
- -3 to 1%76.4 km
- 1 to 3%23.6 km
- 3 to 5%14.6 km
- 5 to 8%13.5 km
- 8 to 12%6.7 km
The 5 hardest climbs
| From | Length | Gain | Avg | Max |
|---|---|---|---|---|
| km 69.6 | 12.3 km | 938 m | 7.6% | 10.3% |
| km 126.9 | 6.7 km | 446 m | 6.6% | 9.4% |
| km 23.6 | 6.7 km | 316 m | 4.7% | 5.5% |
| km 142.6 | 4.5 km | 215 m | 4.8% | 5.4% |
| km 9 | 6.7 km | 249 m | 3.7% | 6.6% |
Climbs measured from the route file, not the race blurb. The profile carries a point roughly every 1.1 km, so a short ramp inside a climb reads smoother here than it does under your wheels, and each climb’s gain is a floor rather than a total.
History
What's changed
- 2027Updated
2027 edition confirmed — 2027-08-14.
Ratings
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The Experience
The Race Across the Sky. 100 miles of extreme Rocky Mountain terrain at 10,000+ feet elevation. One of MTB's most legendary races.
Highlights
1
The 'Race Across the Sky'2
Elevation never below 9,200 feet3
Life Time Grand Prix event4
Legendary finisher's belt buckle