100 miles of Steamboat Springs' most relentless mountain terrain.
Other trail races within 87 miles
Run Rabbit Run 100 sends runners deep into the mountains above Steamboat Springs, Colorado, covering 100 miles and nearly 20,000 feet of elevation gain across some of the most exposed and demanding terrain in the Rockies. The course climbs through dense aspen forests, open alpine ridgelines, and technical singletrack.
With a field split between Hare (competitive) and Tortoise (open) divisions, the race draws everyone from podium hunters to first-time hundred-milers. The altitude can be tough, the weather can turn fast, and the back half of the course has a way of humbling even the most prepared runners.
Some ultra experience recommended
Steamboat Springs, CO, United StatesSeptember 18, 2026
Challenging terrain with rocks, roots, and steep grades
| Location | Mile | Elevation |
|---|---|---|
Start Start | 0.0 | 6,969 ft |
Mt Werner Aid Station | 4.6 | 10,299 ft |
Fish Creek Falls Aid Station | 17.7 | 7,510 ft |
Long Lake Aid Station | 24.3 | 9,865 ft |
Summit Lake (via Continental Divide) Aid Station | 30.1 | 10,423 ft |
Billy's Rabbit Hole Aid Station | 34.3 | 10,092 ft |
Dry Lake (via Flash of Gold) Aid Station | 43.2 | 8,196 ft |
Olympian Hall Aid Station | 50.5 | 6,703 ft |
Lane of Pain Aid Station | 54.4 | 8,061 ft |
Lane of Pain Aid Station | 58.1 | 8,182 ft |
Olympian Hall Aid Station | 63.9 | 6,667 ft |
Dry Lake (via Spring Creek) Aid Station | 70.8 | 8,274 ft |
Billy's Rabbit Hole Aid Station | 76.6 | 10,039 ft |
Summit Lake (via Grouse Trail) Aid Station | 80.8 | 10,315 ft |
Long Lake (via Wyoming Trail) Aid Station | 89.0 | 9,925 ft |
Mt Werner Aid Station | 95.8 | 10,358 ft |
Finish Finish | 100.2 | 6,929 ft |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
September race days in Steamboat Springs bring reliably unpredictable mountain weather. In town, average highs are around 72°F (22°C) with overnight lows near 42°F (6°C), but the course spends long stretches above 10,000 feet where temperatures run 20–30°F colder. The overnight leg regularly drops runners into near-freezing conditions on exposed ridgelines and alpine terrain. September afternoons bring frequent afternoon thunderstorms — lightning, hail, and brief but heavy rain are common at altitude. In bad years conditions can be severe: 2011 brought 40 mph winds and blowing snow, and 2022 saw snow, fog, and mud throughout. Race directors strongly advise preparing for all extremes: blazing midday heat on the lower singletrack, freezing darkness on the alpine sections, and rapid deterioration at any point. Warm layers, rain gear, and gloves are essential regardless of the forecast.
No required gear specified
No recommended gear specified
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