Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 13:00 finish (an estimate) · starting 7:00 AM Oct 3 · headlamp mi 56–the finish. Dark means the sun below civil twilight.
Climbs
7 climbs · 6,109 ft totalbiggest firstConditions typical race-day weather for Oct 3 at the start
Typical = the median of 2016–2025 for Oct 3 ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac 2 years of this race
Past editions
Race-day highs at the start ran from 69° to 81°F, and none of 2 race days was wet.
| Year | Start °F | High point °F | Rain | Wind |
|---|---|---|---|---|
| 2026 Oct 3 | 81°/63° | 72°/55° | dry | 18mph |
| 2025 Oct 4 | 69°/44° | 61°/36° | dry | 8mph |
Next race day Sat, Oct 2, 2027 · 7:00 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.
race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (6,457 ft).
Reviews what runners who have been there say
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About this course
Cuyamaca 100k — 2026 covers 61.9 mi (99.7 km) with 7,875 ft of elevation gain through California, United States. That is about 127 ft per mile of climbing, and 7,873 ft of descent. The course tops out at 6,458 ft and bottoms out at 3,410 ft. The surface is 77% trail, 22% gravel and 2% paved. The profile has 7 sustained climbs; the biggest is the climb from mi 16.1, +2,279 ft over 6.5 mi at 6.6% on average (steepest stretch 14%). Race day is October 3, 2026, starting at 7:00 AM; the sun rises at 6:42 AM and sets at 6:29 PM. Typical race-day weather at the start: a high of 77°F and a low of 53°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
- Jul 27, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Man Against Horse 50mi, 25mi, 1/2 Marathon — 2026Oct · 49 mi · 135 ft/mi · AZSimilar climbing · High altitude · Same month
- Under the Moon 100K — 2026Aug · 59 mi · 124 ft/miSame distance · Similar climbing · Similar weather
- Shawnee Trail Runs — 2026Oct · 51 mi · 124 ft/mi · OHSimilar weather · Similar climbing · Mostly trail
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