Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 7:00 finish (an estimate) · starting 7:00 AM Sep 12. Dark means the sun below civil twilight.
Climbs
18 climbs · 5,912 ft totalbiggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 6,354ft | -6% |
| USGS lidar, 1 m | 6,769ft | 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 29, 2026. The planner still uses the course file.
Aid stations as published on the course file
| Aid station | Mile | km |
|---|---|---|
| A Grouse Lane WATER STATION (lap 1) | 1.3 | 2.0 |
| A CCC AID STATION (lap 1) | 4.7 | 7.5 |
| A Park Road AID STATION (lap 1) | 7.5 | 12.1 |
| A Granite Peak - Start / Finish AID STATION (lap 1) | 10.6 | 17.1 |
| A START / FINISH (lap 1) | 10.6 | 17.1 |
| A Grouse Lane WATER STATION (lap 2) | 11.9 | 19.1 |
| A CCC AID STATION (lap 2) | 15.3 | 24.6 |
| A Park Road AID STATION (lap 2) | 18.1 | 29.2 |
| A Granite Peak - Start / Finish AID STATION (lap 2) | 21.2 | 34.1 |
| A START / FINISH (lap 2) | 21.2 | 34.2 |
| A Grouse Lane WATER STATION (lap 3) | 22.5 | 36.2 |
| A CCC AID STATION (lap 3) | 25.9 | 41.6 |
| A Park Road AID STATION (lap 3) | 28.7 | 46.2 |
| Granite Peak - Start / Finish AID STATION (lap 3) | 31.8 | 51.2 |
| START / FINISH (lap 3) | 31.8 | 51.2 |
Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.
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Conditions typical race-day weather for Sep 12 at the start
Typical = the median of 2016–2025 for Sep 12 ±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 74°F at the start, with a low of 57°.
| Year | Start °F | Rain | Wind |
|---|---|---|---|
| 2026 Sep 12 | 74°/57° | dry | 14mph |
race-day weather from the Open-Meteo historical archive (ERA5) at 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
Rib Mountain Trail Races by IRONBULL 50K — 2026 covers 31.9 mi (51.3 km) with 6,354 ft of elevation gain. That is about 199 ft per mile of climbing, and 6,354 ft of descent. The course tops out at 1,909 ft and bottoms out at 1,257 ft. There are 13 aid stations on course; the longest stretch between aid is 3.4 mi. The profile has 18 sustained climbs; the biggest is the climb from mi 17.6, +502 ft over 1.9 mi at 5.1% on average (steepest stretch 16%). Race day is September 12, 2026, starting at 7:00 AM; the sun rises at 6:35 AM and sets at 7:17 PM. Typical race-day weather at the start: a high of 71°F and a low of 55°F, with a 33% 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
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Berkeley Trail Adventure — 2026Sep · 31 mi · 187 ft/mi · CASame distance · Similar weather · Similar climbing
- Larrabee Lakes — 2025Aug · 31 mi · 199 ft/miSimilar climbing · Similar weather · Same distance
- Virgil Crest Ultras 50K — 2026Sep · 33 mi · 225 ft/miSimilar weather · Same distance · Same month
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