Texas · 10K · 20K · 35K
Big Bend Ultra
Big Bend Ultra is a 10K, 20K, 35K, 55K and 100K event held in Terlingua, Texas. Its next confirmed date is Sunday, January 17, 2027. About 2,562 runners take part across all distances.
- Race day
- January 17, 2027
- Location
- Terlingua, TX
- Field size
- ~2,562 runners
Race details
- Date
- Sunday, January 17, 2027
- Location
- Terlingua, Texas
- Distances
- 10K, 20K, 35K, 55K, 100K
- Field size
- About 2,562 runners
- Course
- Remote desert trail ultra in Big Bend Ranch State Park; technical rocky singletrack/doubletrack. Organizer rates difficulty easy(10K)/moderate(20K,35K)/hard(55K,100K); no official elevation profile or GPX published.
- Registration
- runsignup.com
- Official website
- trailroots.com
Registration, course & weather
- Registration status
- Open
- Entry fee
- Listed fee for the longest distance, $240 (from runsignup.com, checked September 27, 2026)
- Start time
- 5:30 AM CST
- Course profile — 10K
- Out-and-back course; Trail surface; Not USATF certified
- Course profile — 20K
- Loop course; Trail surface; Not USATF certified
- Course profile — 35K
- Loop course; Trail surface; Not USATF certified
- Course profile — 55K
- Loop course; Trail surface; Not USATF certified
- Course profile — 100K
- Loop course; Trail surface; Not USATF certified
- Typical race-day weather
- about 30°F at the start, 33% humidity, 4 mph wind (based on the 2026 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 27, 2026)
About the Big Bend Ultra
In 2004, a wild idea was hatched: an ultra trail race in Big Bend. It had never been done. The logistics were impossible. Big Bend national and state parks are huge: over 300,000 acres and several hours from San Antonio. Water is scarce. Fuel is scarce. Transportation is scarce. The isolation also means it has lowest light pollution of any park in the lower 48 states: making it a fantastic place for stargazing. This was the beginning of a truly great event that has been held annually ever since…
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Big Bend Ultra: common questions
- When is the Big Bend Ultra?
- The next confirmed date is Sunday, January 17, 2027.
- Where is the Big Bend Ultra held?
- In Terlingua, Texas.
- What distances does the Big Bend Ultra offer?
- 10K, 20K, 35K, 55K and 100K.
- How many people run the Big Bend Ultra?
- About 2,562 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Big Bend Ultra?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Big Bend Ultra?
- Yes — registration is open. Listed fee for the longest distance, $240 (from runsignup.com, checked September 27, 2026).
- What time does the Big Bend Ultra start?
- 5:30 AM CST.
- What is race-day weather usually like at the Big Bend Ultra?
- about 30°F at the start, 33% humidity, 4 mph wind (based on the 2026 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 27, 2026).
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