Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 2:45 finish (an estimate) · starting 7:00 AM Aug 2. Dark means the sun below civil twilight.
Climbs
3 climbs · 1,016 ft totalbiggest firstConditions typical race-day weather for Aug 2 at the start
Typical = the median of 2016–2025 for Aug 2 ±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 77°F at the start, with a low of 54°.
| Year | Start °F | Rain | Wind |
|---|---|---|---|
| 2026 Aug 2 | 77°/54° | dry | 8mph |
Next race day Sun, Aug 1, 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.
Reviews what runners who have been there say
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About this course
Skyline 50k Endurance Run 21K — 2026 covers 13.1 mi (21.0 km) with 1,498 ft of elevation gain through California, United States. That is about 115 ft per mile of climbing, and 1,495 ft of descent. The course tops out at 837 ft and bottoms out at 235 ft. The surface is 49% trail, 30% paved and 20% gravel. The profile has 3 sustained climbs; the biggest is the climb from mi 1.9, +426 ft over 2.4 mi at 3.3% on average (steepest stretch 12%). Race day is August 2, 2026, starting at 7:00 AM; the sun rises at 6:14 AM and sets at 8:17 PM. Typical race-day weather at the start: a high of 69°F and a low of 56°F, with a 3% 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 29, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Black Bear Trail Races 23K — 2026Aug · 14 mi · 114 ft/mi · NHSimilar climbing · Same distance · Similar weather
- Gauja Trail by UTMB Gauja Trail 20 K — 2027Aug · 13 mi · 125 ft/miSame distance · Similar weather · Similar climbing
- Sunset & Cider Trail Races 13 Miler — 2026Oct · 13 mi · 133 ft/mi · CASame distance · Same state · Similar climbing
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