The complete challenge — 29 miles up and back on North America's highest road
Other trail races within 44 miles
The Blue Sky Round-Trip covers the full out-and-back on North America's highest paved road — climbing 14.5 miles from Echo Lake at 10,600 feet to the 14,264-foot summit of Mount Blue Sky, then running back down to the start. Introduced in 2021, the Round-Trip starts one hour before the Ascent and adds the challenge of managing an extended high-altitude descent after reaching the summit. A summit drop bag is available at the turnaround point.
Experienced ultrarunners
Idaho Springs, CO, United StatesJune 28, 2026
| Location | Mile | Elevation |
|---|---|---|
Echo Lake Start | 0.0 | 10,673 ft |
Nature Center Aid Station | 3.0 | 11,565 ft |
Mile 6 Aid Station Aid Station | 6.0 | 12,441 ft |
Summit Lake Aid Station | 9.0 | 12,851 ft |
Mile 12 Aid Station Aid Station | 12.0 | 13,432 ft |
Mt. Blue Sky Summit Aid Station | 14.5 | 14,150 ft |
Mile 12 Aid Station (Return) Aid Station | 17.0 | 13,432 ft |
Summit Lake (Return) Aid Station | 20.0 | 12,851 ft |
Mile 6 Aid Station (Return) Aid Station | 23.0 | 12,441 ft |
Nature Center (Return) Aid Station | 26.0 | 11,565 ft |
Echo Lake Finish | 29.0 | 10,673 ft |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
Echo Lake Campground is located directly at the race start (13264 Chicago Creek Rd). Book sites through Recreation.gov. Additional dispersed camping is available in the surrounding Arapaho National Forest.
No required gear specified
No recommended gear specified
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