Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 7:35 finish (an estimate) · starting 7:00 AM Aug 8. Dark means the sun below civil twilight.
Climbs
9 climbs · 6,995 ft totalbiggest firstConditions typical race-day weather for Aug 8 at the start
Typical = the median of 2016–2025 for Aug 8 ±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 83°F at the start, with a low of 63°.
| Year | Start °F | High point °F | Rain | Wind | Heat index |
|---|---|---|---|---|---|
| 2026 Aug 8 | 83°/63° | 77°/57° | 0.15in | 8mph | 80° |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (9,554 ft).
Reviews what runners who have been there say
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About this course
Thunder Mountain Trail Challenge 50K — 2026 covers 31.2 mi (50.2 km) with 7,726 ft of elevation gain. That is about 248 ft per mile of climbing, and 7,733 ft of descent. The course tops out at 9,554 ft and bottoms out at 7,789 ft. The profile has 9 sustained climbs; the biggest is the climb from mi 17.6, +1,293 ft over 2.1 mi at 11.6% on average (steepest stretch 35%). Race day is August 8, 2026, starting at 7:00 AM; the sun rises at 6:09 AM and sets at 8:05 PM. Typical race-day weather at the start: a high of 72°F and a low of 50°F, with a 17% 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 29, 2026Added to the catalog
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