Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 7:05 finish (an estimate) · starting 7:00 AM May 15. Dark means the sun below civil twilight.
Climbs
10 climbs · 5,448 ft totalbiggest firstConditions typical race-day weather for May 15 at the start
Typical = the median of 2016–2025 for May 15 ±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, May 15, 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
No reviews yet — be the first to run it and tell other runners what to expect.
About this course
Napa Wilderness Trail Runs 50K — 2027 covers 32.5 mi (52.3 km) with 6,323 ft of elevation gain through California, United States. That is about 195 ft per mile of climbing, and 6,326 ft of descent. The course tops out at 1,630 ft and bottoms out at 136 ft. The surface is 85% trail and 15% gravel. The profile has 10 sustained climbs; the biggest is the climb from mi 11.3, +690 ft over 0.7 mi at 18.2% on average (steepest stretch 32%). Race day is May 15, 2027, starting at 7:00 AM; the sun rises at 5:59 AM and sets at 8:13 PM. Typical race-day weather at the start: a high of 73°F and a low of 49°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.
Load the course in the TrailGoat Run Planner for grade-adjusted pacing, climb-by-climb splits, hourly weather and a full hydration & fueling plan — free, no account needed.
Race director? — one line of HTML, always up to date.
Course history
- Sep 3, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Rim Rock 50 Mile Trail Challenge 50 mile solo — 2027May · 49 mi · 191 ft/mi · CASimilar weather · Mostly trail · Similar climbing
- Tamalpa Headlands 50K — 2026Aug · 31 mi · 216 ft/mi · CASimilar weather · Same distance · Same state
- Valencia Trail Race 50K31 mi · 197 ft/mi · CASimilar climbing · Same distance · Same state
More race courses
- Western States 100 — 2027100.2 mi · California, United States
- That's No Moon Trail Races 30K — 202618.6 mi · California, United States
- Rim Rock 50 Mile Trail Challenge 50 mile solo — 202749.4 mi · California, United States
- San Diego 100 100 Miler Solo — 2027100.1 mi · California, United States
- Noble Canyon 50K/15K — 20269.9 mi · California, United States
- Dick Collins Firetrails 100k — 202663.0 mi · California, United States
Not seeing the race you came for? — most are live within a day.