Leakey, TX, United States · Saturday, October 17, 2026

Fixed Distance 50K

South Texas 50km Ultra

17 days to go
50 km Distance
700 m Climbing
3.6 Grit · Challenging
29.7288° N, 99.7614° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 14 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 14 hours 16:48 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 85% of 50K races. Measured against 1034 races of the same distance. Cut-off calculator →
Field size ~41 Small. Long stretches with nobody in sight.

DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, October

Daytime high 28°C
Night low 15°C
Rainfall Mostly dry
Daylight 11 h 26 m of light

Regional 2001-2020 average for October — NASA POWER, grid elevation 444 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2025 50km 41 Carlos Arana · 05:40:06 Alexandra Walker · 05:05:05
2024 50km 38 Bryce Enochs · 04:11:51 Alexandra Walker · 04:27:05
2023 50km 26 Josh Heimbach · 04:09:29 Lenka Halamkova · 05:52:22

The field grew 8% between 2024 (38) and 2025 (41). 15% of the 2025 field were women.

DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a fast & flat course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert
👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 50 km of trail with 700 m of ascent.

  • Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition 50 km of self-supported fuelling between aid stations.
  • Hydration Vests Flask capacity for 50 km, without the bounce.
  • Headlamps A 14 h limit puts you out there after dark.
  • GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
All gear guides →

Similar races

Other 50K trail ultras, closest in distance first.