Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 10:00 finish (an estimate) · starting 7:00 AM Mar 20 · dark at the start until mi 1.5. Dark means the sun below civil twilight.
Climbs
biggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 1,152ft | -9% |
| USGS lidar, 1 m | 1,260ft | 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 25, 2026. The planner still uses the course file.
Aid stations as published on the course file
| Aid station | Mile | km |
|---|---|---|
| A Hydration Station (lap 1) | 2.5 | 4.0 |
| A Lone Ranger Aid Station (lap 1) | 8.0 | 12.8 |
| A Start/Finish (lap 1) | 12.4 | 20.0 |
| A Main Aid Station (lap 1) | 12.4 | 20.0 |
| A Hydration Station (lap 2) | 14.9 | 24.0 |
| A Lone Ranger Aid Station (lap 2) | 20.4 | 32.8 |
| A Start/Finish (lap 2) | 24.8 | 39.9 |
| A Main Aid Station (lap 2) | 24.8 | 39.9 |
| A Hydration Station (lap 3) | 27.3 | 44.0 |
| A Lone Ranger Aid Station (lap 3) | 32.8 | 52.8 |
| A Start/Finish (lap 3) | 37.2 | 59.9 |
| A Main Aid Station (lap 3) | 37.2 | 59.9 |
| A Hydration Station (lap 4) | 39.7 | 63.9 |
| A Lone Ranger Aid Station (lap 4) | 45.2 | 72.8 |
| Start/Finish (lap 4) | 49.6 | 79.9 |
| Main Aid Station (lap 4) | 49.6 | 79.9 |
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 Mar 20 at the start
Typical = the median of 2016–2025 for Mar 20 ±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, Mar 20, 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
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About this course
Chupacabra 50 50 Miler — 2027 covers 49.6 mi (79.9 km) with 1,152 ft of elevation gain. That is about 23 ft per mile of climbing, and 1,158 ft of descent. The course tops out at 1,483 ft and bottoms out at 1,352 ft. The surface is 100% trail. There are 14 aid stations on course; the longest stretch between aid is 5.5 mi. Race day is March 20, 2027, starting at 7:00 AM; the sun rises at 7:44 AM and sets at 7:51 PM. Typical race-day weather at the start: a high of 70°F and a low of 47°F, with a 19% 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
- Sep 10, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Brazos Legend 50M "The Beast" — 2027Apr · 50 mi · 34 ft/miMostly trail · Same distance · Similar climbing
- The Bootlegger 100 Mile Trail Race 50 Mile — 2027Mar · 50 mi · 55 ft/miSame distance · Similar weather · Same month
- North Texas Ultra 100K — 2027Feb · 62 mi · 16 ft/mi · TXMostly trail · Similar climbing
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