Brazos Bend 100
About this race
December 5th, 2026
Sponsored by Altra Running and NeverSecond
Western States 100 Lottery Qualifier (sub 32-hour 100-mile) with 119 qualifiers in 2024 and 133 qualifier in 2025!
This is the December edition of our popular Brazos Bend races, with the marquee event being the 100-mile.
The Brazos Bend 100 is the largest trail race in Texas and one of the fastest trail races in the world on flat and smooth trails with incredible support from aid stations on a multi-loop course. The top 3 runners were under 16 hours in 2024. The course is 99.9% flat, and the only "hill" is a 10-foot rise over 0.1 of a mile. The rest of the ~16.7mi loop is flat surfaces that move from hard crushed rock, soft hiking trails under tree canopy, and smooth horse trails. Most runners will use a road shoe like the Altra Vanish Carbon 2, Torin 8, or Flow 2 but under wetter conditons a trail shoe may be a better choice. Conditions in December can have a mix of anything, but are typically great for running, genneraly between 40-70 degrees. Brazos Bend is a spectacular State Park located just South of Houston/Sugar Land and is most known for its abundance of birds and American Alligators, among other wildlife. The gators are a part of our race; there has never been an incident in the park's 50-year history. Enjoy them on your run, from a distance, and you may get some unique race photos!
Complete the 50K or 50M in April, AND the 100K or 100M in December of the same calendar year to earn the Brazos Bend Challenge Coin.
Cutoff Times: for ALL races, the finish line closes on Sunday at 2 PM (32h 100M, 31h 100k, 31.5h Marathon, 31h Half Marathon). Final lap starts will be assessed to meet the course time limit at the discretion of the race director and staff.
Information for the 2026 event is continuing to be updated as we get closer to event day. We do not expect any major changes, but stay tuned to your email for updates. The RunSignup page is your best place for event information. Please try our AI Chatbot to ask any questions you may have.
Pick your distance
Trail running
100M
Under 32 hours for Western States Qualification. 32 Hour Cutoff.
100K
31 Hour Cutoff.
26.2M
30 Hour Cutoff.
13.1M
29.5 Hour Cutoff.
Brazos Kids Kilometer
12 Years and Under
Running
Ultra Pacer
All pacers must be registered. Pacers are not required, we will have over 300 ultra runners and tons of support, you will not be alone! 100 Mile runners may have a pacer on the final two (2) loops. 100 Kilometer runners may have a pacer for the final loop only. NO pacers in the marathon, or half marathon events. Pacer registration includes: Park Access, Trail Access, Parking, Shuttle, Expo Access, Pacer Bib, Aid Station Access/Support. A few important notes and instructions: - The pacer must be the one to register; the runner can not register on their behalf - If the runner purchases the pacer add-on a registration coupon code will be emailed - The pacer registration includes their park pass - Pacers can pick up their pacer bib at any of the packet pickups or the start line - Runners may pick up packets (runner, pacer, and extra park passes) on behalf of others by providing their QR code(s) - We will have additional event shirts and hoodies available to purchase for your pacers, family, and crew at the event - All crew, family, and friends are required to purchase a park pass from TROT (unless they are a registered participant, pacer, volunteer, or under 13). Wristbands can be picked up from the packet pickup/merchandise area. Show proof of purchase at the park entrance. Carpool: Please try and limit the number of vehicles entering the park; we are very limited on parking spaces Pacer Rules/Information: - You may only have one pacer at a time - 100 Mile runners may have a pacer on the final two (2) loops - 100 Kilometer runners may have a pacer for the final loop only - The main loop is ~16.7 miles; pacers may start/finish at the beginning of the loop or from 40 Acre (mile 3.1), Nature Center (mile 5.9), or Sawmill (mile 12.2), but pacer transportation is not provided outside of the normal parking shuttle option (does not go to Sawmill). It is recommended that pacers start/finish at the Elm Lake Pavilion.
Typical race-day weather
Based on 2 years of Open-Meteo archive data for this event's race dates in Needville, plus the 3 days either side.
The sun rises at 7:03 AM and sets at 5:24 PM local time (CST) in Needville on December 5, 2026 — 10h 21m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Results — Brazos Bend 100
Other races near Needville
Different organizers, within 40 miles, in the next three months
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RestorationCity's Run 2 Restore
Bridging the Gap Ride #7
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 2 Needville events
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