Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 21:45 finish (an estimate) · starting 5:00 AM Jun 26 · dark at the start until mi 0.3 · headlamp mi 74–the finish. Dark means the sun below civil twilight.
Climbs
15 climbs · 12,762 ft totalbiggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 16,958ft | +5% |
| USGS lidar, 1 m | 16,097ft | 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 30, 2026. The planner still uses the course file.
Aid stations as published on the course file
| Aid station | Mile | km |
|---|---|---|
| A Lyon Ridge | 10.1 | 16.2 |
| A Red Star Ridge | 15.6 | 25.2 |
| A Duncan Canyon | 23.9 | 38.5 |
| A Robinson Flat | 30.1 | 48.4 |
| A Miller's Defeat | 35.0 | 56.3 |
| A Dusty Corners | 38.6 | 62.2 |
| A Last Chance | 43.5 | 70.1 |
| A Devil's Thumb | 48.0 | 77.3 |
| A El Dorado Creek | 53.2 | 85.6 |
| A Michigan Bluff | 56.0 | 90.1 |
| A Foresthill | 62.0 | 99.7 |
| A Dardanelles (Cal-1) | 65.6 | 105.6 |
| A Peachstone (Cal-2) | 70.5 | 113.5 |
| A Ford's Bar (Cal-3) | 73.3 | 117.9 |
| A Rucky Chucky | 77.8 | 125.2 |
| A Green Gate | 79.6 | 128.1 |
| A Auburn Lake Trails | 84.9 | 136.6 |
| A Quarry Rd | 90.5 | 145.7 |
| A Pointed Rocks | 94.2 | 151.6 |
| A Robie Point | 98.8 | 159.0 |
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 Jun 26 at the start
Typical = the median of 2016–2025 for Jun 26 ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac the sky on race day
Next race day Sat, Jun 26, 2027 · 5:00 AM start
First and last light are civil twilight, the sun 6° below the horizon. The moon is lit as at midnight after the start; headlamp hours count a typical finish from the start while the sun is below civil twilight. Worked out for the start line.
Reviews what runners who have been there say
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About this course
Western States 100 — 2027 covers 100.2 mi (161.2 km) with 16,958 ft of elevation gain through California, United States. That is about 169 ft per mile of climbing, and 21,902 ft of descent. The course tops out at 8,698 ft and bottoms out at 573 ft. There are 20 aid stations on course; the longest stretch between aid is 10.1 mi. The profile has 15 sustained climbs; the biggest is the climb from mi 0.0, +2,451 ft over 4.1 mi at 11.4% on average (steepest stretch 21%). Race day is June 26, 2027, starting at 5:00 AM; the sun rises at 5:37 AM and sets at 8:32 PM. Typical race-day weather at the start: a high of 78°F and a low of 47°F, with a 9% 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
- Oct 30, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Western States 100 — 2026Jun · 100 mi · 174 ft/mi · CASame distance · Similar weather · Similar climbing
- San Diego 100 100 Miler Solo — 2027Apr · 100 mi · 161 ft/mi · CASame distance · Similar climbing · High altitude
- Hood Hundred — 2026Aug · 99 mi · 183 ft/mi · ORSame distance · High altitude · Similar climbing
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