100 miles through the canyons of Auburn, birthplace of mountain ultras
Other trail races within 100 miles
A demanding 100-mile point-to-point course starting at China Wall trailhead and finishing in historic downtown Auburn. The route follows portions of the iconic Western States Trail through the canyons of the North Fork American River, with steep descents to river crossings and punishing climbs back out. Features the Devil's Thumb descent, Rucky Chucky river crossing, and the notorious K2 climb near Cool, accumulating over 18,000 feet of climbing across rugged Sierra Nevada foothill terrain.
Experienced ultrarunners
Auburn, CA, United StatesApril 24, 2026
| Location | Mile | Elevation |
|---|---|---|
China Wall Start | 0.0 | 5,016 ft |
Deadwood 1 Aid Station | 10.1 | 3,930 ft |
Devils Thumb 1 (Water only) Aid Station | 12.0 | 4,367 ft |
Swinging Bridge Checkpoint | 13.5 | 2,726 ft |
Devils Thumb 2 (Water Only) Aid Station | 15.1 | 4,367 ft |
Deadwood 2 Aid Station | 18.3 | 3,930 ft |
Michigan Bluff Aid Station | 24.0 | 3,474 ft |
Foresthill Aid Station | 30.0 | 3,278 ft |
Cal 2 Aid Station | 38.2 | 1,690 ft |
Drivers Flat Aid Station | 47.5 | 1,690 ft |
Mammoth Bar Aid Station | 55.5 | 623 ft |
Confluence Aid Station | 59.1 | 577 ft |
No Hands 1 (Water Only) Aid Station | 59.9 | 584 ft |
Cool 1 Aid Station | 62.9 | 1,526 ft |
Coffer Dam 1 (Water Only) Aid Station | 64.6 | 1,440 ft |
Coffer Dam 2 (Water Only) Aid Station | 69.1 | 1,440 ft |
Cool 2 Aid Station | 75.1 | 1,526 ft |
Browns Bar 1 Aid Station | 79.2 | 764 ft |
ALT Aid Station | 84.7 | 1,450 ft |
Browns Bar 2 Aid Station | 92.3 | 764 ft |
No Hands 2 (Water Only) Aid Station | 98.3 | 584 ft |
Downtown Auburn Finish | 101.8 | 1,270 ft |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
April racing in the Sierra Nevada foothills means highly variable conditions. Mornings at the China Wall start often arrive cold and foggy, while canyon floors can warm quickly by midday. Spring storms occasionally roll through during race weekend, bringing cold rain, hail, and even snow at elevation. Night temperatures between the canyons dip well below 50°F. During warmer years, exposed sections at lower river elevations can push into the 80s in the afternoon. The mandatory gear check enforces both a hot weather kit (sunglasses, sunscreen, 2L water) and a cold weather kit (waterproof overpants, warm hat, warm gloves, protective eyewear) that may be required based on conditions announced pre-race.
No reviews for this event yet. Be the first to share your experience!
