Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 10:50 finish (an estimate) · starting 7:00 AM May 16. Dark means the sun below civil twilight.
Climbs
16 climbs · 7,876 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° | 75°/47° | dry | 13mph |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (1,627 ft).
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
Rim Rock 50 Mile Trail Challenge — 2026 covers 49.5 mi (79.7 km) with 9,469 ft of elevation gain. That is about 191 ft per mile of climbing, and 9,467 ft of descent. The course tops out at 1,627 ft and bottoms out at 23 ft. The profile has 16 sustained climbs; the biggest is the climb from mi 36.1, +677 ft over 0.8 mi at 16.6% on average (steepest stretch 36%). 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 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
- Oct 13, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Rim Rock 50 Mile Trail Challenge Mini Rim Rock — 2027May · 50 mi · 191 ft/miSame distance · Similar climbing · Similar weather
- Rim Rock 50 Mile Trail Challenge 50 mile solo — 2027May · 49 mi · 191 ft/mi · CASame distance · Similar climbing · Similar weather
- Cayuga Trails — 2026May · 49 mi · 202 ft/miSame distance · Similar weather · Similar climbing
More race courses
- Ice Age Trail 50 — 202748.1 mi · location TBD
- Penyagolosa Trails CSP 106K — 202765.4 mi · location TBD
- Trail 100 Andorra by UTMB Ultra 105K — 202764.1 mi · location TBD
- Dolomiti Extreme Trail 103K — 202762.3 mi · location TBD
- Mozart 100 by UTMB — 202772.0 mi · location TBD
- West Highland Way Race — 202794.5 mi · location TBD
Not seeing the race you came for? — most are live within a day.