Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 2:55 finish (an estimate) · starting 7:00 AM May 16. Dark means the sun below civil twilight.
Climbs
4 climbs · 1,795 ft totalbiggest firstConditions typical race-day weather for May 16 at the start
Typical = the median of 2016–2025 for May 16 ±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 79°F at the start, with a low of 51°.
| Year | Start °F | High point °F | Rain | Wind |
|---|---|---|---|---|
| 2026 May 16 | 79°/51° | 76°/47° | dry | 13mph |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (1,503 ft).
Reviews what runners who have been there say
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About this course
Napa Wilderness Trail Runs — 2026 covers 13.4 mi (21.6 km) with 2,197 ft of elevation gain. That is about 163 ft per mile of climbing, and 2,197 ft of descent. The course tops out at 1,503 ft and bottoms out at 23 ft. The profile has 4 sustained climbs; the biggest is the climb from mi 5.8, +645 ft over 2.8 mi at 4.3% on average (steepest stretch 12%). Race day is May 16, 2026, starting at 7:00 AM; the sun rises at 5:58 AM and sets at 8:15 PM. Typical race-day weather at the start: a high of 74°F and a low of 50°F, with a 10% 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 13, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Yandina Five 'O' — 2025Jun · 13 mi · 161 ft/miSame distance · Similar climbing · Similar weather
- Kagaspa Trail Endurance 100 by UTMB 2027 KAGASPA 20K — 2027Jun · 13 mi · 155 ft/miSame distance · Similar weather · Similar climbing
- Valencia Trail Race Half Marathon14 mi · 171 ft/mi · CASame distance · Similar climbing
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