Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 13:30 finish (an estimate) · starting 7:00 AM Sep 4 · headlamp mi 59–the finish. Dark means the sun below civil twilight.
Climbs
13 climbs · 13,192 ft totalbiggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 13,625ft | -16% |
| USGS lidar, 1 m | 16,244ft | 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 23, 2026. The planner still uses the course file.
Conditions typical race-day weather for Sep 4 at the start
Typical = the median of 2016–2025 for Sep 4 ±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 55°F at the start, with a low of 32°.
| Year | Start °F | High point °F | Rain | Wind |
|---|---|---|---|---|
| 2026 Sep 4 | 55°/32° | 49°/27° | 0.15in | 7mph |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (5,692 ft).
Reviews what runners who have been there say
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About this course
Dark Divide Trail Races — 2026 covers 60.6 mi (97.6 km) with 13,625 ft of elevation gain through Washington, United States. That is about 225 ft per mile of climbing, and 15,984 ft of descent. The course tops out at 5,692 ft and bottoms out at 1,345 ft. The surface is 80% trail and 20% gravel. The profile has 13 sustained climbs; the biggest is the climb from mi 47.3, +3,911 ft over 6.9 mi at 10.7% on average (steepest stretch 27%). Race day is September 4, 2026, starting at 7:00 AM; the sun rises at 6:33 AM and sets at 7:42 PM. Typical race-day weather at the start: a high of 74°F and a low of 48°F, with a 16% 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.
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Course history
- Jul 27, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Olympic Mountains Trail Races — 2026Aug · 63 mi · 199 ft/mi · WAMostly trail · Same distance · Same state
- Kachess Ridge 50 50M — 2026Aug · 49 mi · 208 ft/mi · WASimilar weather · Similar climbing · Same state
- Shinetsu Five Mountains 110K — 2027Sep · 69 mi · 223 ft/miSimilar climbing · Same distance · Same month
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