Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 5:35 finish (an estimate) · starting 7:00 AM Aug 29. Dark means the sun below civil twilight.
Climbs
biggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 1,102ft | -36% |
| USGS lidar, 1 m | 1,713ft | 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 30, 2026. The planner still uses the course file.
Conditions typical race-day weather for Aug 29 at the start
Typical = the median of 2016–2025 for Aug 29 ±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 78°F at the start, with a low of 63°.
| Year | Start °F | Rain | Wind |
|---|---|---|---|
| 2026 Aug 29 | 78°/63° | dry | 9mph |
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
Dirty Dozen 50K — 2026 covers 27.4 mi (44.2 km) with 1,102 ft of elevation gain. That is about 40 ft per mile of climbing, and 1,113 ft of descent. The course tops out at 141 ft and bottoms out at 79 ft. Race day is August 29, 2026, starting at 7:00 AM; the sun rises at 6:20 AM and sets at 7:34 PM. Typical race-day weather at the start: a high of 80°F and a low of 67°F, with a 26% 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 30, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Black Copperhead Sting 50k — 2026Aug · 32 mi · 32 ft/miSimilar climbing · Same month
- Run 4 the Border The Whole Enchilada 50K — 2026Aug · 32 mi · 27 ft/mi · NCSimilar climbing · Same month
- Badger Trail Races 100 Mile (segment map, 35 mi) — 2026Aug · 35 mi · 26 ft/mi · ILSimilar weather · Similar climbing · Same month
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