Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 4:45 finish (an estimate) · starting 7:00 AM Sep 27. Dark means the sun below civil twilight.
Climbs
2 climbs · 1,516 ft totalbiggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 2,238ft | +8% |
| USGS lidar, 1 m | 2,075ft | reference |
They differ because a GPS file picks up noise on every wiggle and often takes its heights from a coarse terrain model, while lidar maps the ground itself to about a metre. We sampled this route every 98 ft against USGS 3DEP and counted each rise of 10 ft or more, on Oct 29, 2026. The planner still uses the course file.
Aid stations as published on the course file
| Aid station | Mile | km |
|---|---|---|
| Start/Finish | 0.0 | 0.0 |
| A Farris Creek Aid Station | 5.8 | 9.3 |
| A Teocalli Aid Station | 12.1 | 19.4 |
Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.
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Conditions typical race-day weather for Sep 27 at the start
Typical = the median of 2016–2025 for Sep 27 ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac 1 year of this race
Past editions
On race day it reached 66°F at the start, with a low of 34°.
| Year | Start °F | High point °F | Rain | Wind |
|---|---|---|---|---|
| 2025 Sep 27 | 66°/34° | 62°/30° | dry | 10mph |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (10,000 ft).
Reviews what runners who have been there say
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About this course
Crested Butte Ultra — 2025 covers 20.7 mi (33.3 km) with 2,238 ft of elevation gain. That is about 108 ft per mile of climbing, and 2,244 ft of descent. The course tops out at 10,000 ft and bottoms out at 8,832 ft. There are 2 aid stations on course; the longest stretch between aid is 8.7 mi. The profile has 2 sustained climbs; the biggest is the climb from mi 3.8, +1,083 ft over 5.3 mi at 3.8% on average (steepest stretch 18%). Race day is September 27, 2025, starting at 7:00 AM; the sun rises at 7:01 AM and sets at 6:58 PM. Typical race-day weather at the start: a high of 65°F and a low of 34°F, with a 23% chance of a wet day. The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.
Load the course in the TrailGoat Run Planner for grade-adjusted pacing, climb-by-climb splits, hourly weather and a full hydration & fueling plan — free, no account needed.
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Course history
- Oct 29, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Crested Butte Ultra 35K — 2026Sep · 21 mi · 108 ft/mi · COSame distance · Similar climbing · Similar weather
- Snow Mountain Ranch — 2025Sep · 19 mi · 152 ft/miSame distance · High altitude · Similar weather
- Snow Mountain Ranch 33K — 2026Sep · 19 mi · 152 ft/mi · COSame distance · High altitude · Same month
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