Thirty-six hours to cover 100 miles of Steamboat Springs' most relentless mountain terrain.
Other trail races within 87 miles
The Tortoise division is Run Rabbit Run's open race: a 9:00 am Friday start and thirty-six hours to finish, over the same 100-mile loop and nearly 20,000 feet of climbing that the Hares run four hours behind you. The course climbs through dense aspen forests, open alpine ridgelines and technical singletrack, and the back half has a way of humbling even the most prepared runners.
Tortoises may take a pacer from Dry Lake onward, and men over 60 and women over 50 may have one for the entire course — as well as a two-hour early start at 7:00 am. Crew may help at any designated crew aid station or spectator access point.
A sub-36-hour finish is a Western States qualifier. Tortoises run for awards rather than prize money, and you may switch to the Hare division until 7 September 2026.
Some ultra experience recommended
Steamboat Springs, CO, United StatesSeptember 18, 2026
Run Rabbit Run 100 - Tortoises is a loop trail race in Steamboat Springs, CO, United States, held on September 18, 2026. The course covers 101.8 miles, climbs 20,390 ft, and has a 36h cutoff.
Challenging terrain with rocks, roots, and steep grades
Course preview video for Run Rabbit Run 100 - Tortoises. The course covers 101.8 miles.
| Location | Mile | Elevation | Cutoff | Crew | Pacers | Drop bags |
|---|---|---|---|---|---|---|
Start Start | 0.0 | 6,969 ft | — | Crew | Drop Bags | |
Mt Werner Aid Station | 5.4 | 10,299 ft | 6h30m3:30 PM | |||
Fish Creek Falls Aid Station | 17.7 | 6,952 ft | 9h6:00 PM | CrewHike in | ||
Long Lake Aid Station | 24.3 | 9,865 ft | — | |||
Summit Lake (via Continental Divide) Aid Station | 30.1 | 10,423 ft | — | Crew | Drop Bags | |
Billy's Rabbit Hole Aid Station | 34.3 | 10,092 ft | — | |||
Dry Lake (via Flash of Gold) Aid Station | 44.5 | 8,196 ft | — | Crew | Pacers | |
Olympian Hall Aid Station | 51.2 | 6,703 ft | 17h30m2:30 AM +1 | Crew | Pacers | Drop Bags |
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 | 22h45m7:45 AM +1 | Crew | Pacers | Drop Bags |
Dry Lake (via Spring Creek) Aid Station | 70.8 | 8,274 ft | 25h10:00 AM +1 | Crew | Pacers | |
Billy's Rabbit Hole Aid Station | 76.6 | 10,039 ft | — | |||
Summit Lake (via Grouse Trail) Aid Station | 80.8 | 10,315 ft | 30h3:00 PM +1 | Crew | Pacers | Drop Bags |
Long Lake (via Wyoming Trail) Aid Station | 89.0 | 9,925 ft | 33h30m6:30 PM +1 | |||
Mt Werner Aid Station | 95.8 | 10,358 ft | 35h8:00 PM +1 | |||
Near Top of Gondola Crew Access | 97.8 | 9,055 ft | — | Crew | Pacers | |
Finish Finish | 101.8 | 6,929 ft | 36h9:00 PM +1 | Crew | Drop Bags |
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
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.
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