Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 21:15 finish (an estimate) · starting 7:00 AM Apr 30 · headlamp mi 60–the finish. Dark means the sun below civil twilight.
Climbs
16 climbs · 10,425 ft totalbiggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 16,149ft | +16% |
| USGS lidar, 1 m | 13,867ft | 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 27, 2026. The planner still uses the course file.
Conditions typical race-day weather for Apr 30 at the start
Typical = the median of 2016–2025 for Apr 30 ±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 Fri, Apr 30, 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.
Reviews what runners who have been there say
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About this course
San Diego 100 100 Miler Solo — 2027 covers 100.1 mi (161.1 km) with 16,149 ft of elevation gain through California, United States. That is about 161 ft per mile of climbing, and 16,152 ft of descent. The course tops out at 6,479 ft and bottoms out at 3,639 ft. The surface is 83% trail, 14% gravel and 2% paved. The profile has 16 sustained climbs; the biggest is the climb from mi 51.5, +1,781 ft over 6.6 mi at 5.1% on average (steepest stretch 23%). Race day is April 30, 2027, starting at 7:00 AM; the sun rises at 6:01 AM and sets at 7:28 PM. Typical race-day weather at the start: a high of 66°F and a low of 43°F, with a 11% 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
- Sep 3, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- San Diego 100 100 Miler Crewed — 2027Apr · 100 mi · 161 ft/miSame distance · Similar climbing · Mostly trail
- Western States 100 — 2026Jun · 100 mi · 174 ft/mi · CASame distance · Mostly trail · High altitude
- Western States 100 — 2027Jun · 100 mi · 169 ft/mi · CASame distance · Similar climbing · High altitude
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