Brazos Bend 100

Event Date

December 5th, 2026

Race Sponsors

Sponsored by Altra Running and NeverSecond

Qualification Information

• Western States 100 Lottery Qualifier: sub 32-hour 100-mile
• Qualifiers in 2024: 119 runners
• Qualifiers in 2025: 133 runners

Race Overview

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.

Course Details

• Terrain: 99.9% flat, with a 10-foot rise over 0.1 of a mile
• Loop Distance: ~16.7 miles
• Surface Types: hard crushed rock, soft hiking trails under tree canopy, and smooth horse trails
• Shoe Recommendation: road shoes like Altra Vanish Carbon 2, Torin 8, or Flow 2: trail shoes may be better under wetter conditions

Weather Conditions

Conditions in December can have a mix of anything, but are typically great for running, generally between 40-70 degrees.

Wildlife

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!

Brazos Bend Challenge Coin

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

• Finish Line Closure: Sunday at 2 PM
• Time Limits: 32h 100M, 31h 100K, 31.5h Marathon, 31h Half Marathon
• Final Lap Assessments: to meet course time limit at the discretion of the race director and staff

Stay Updated

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.

Race URL

For more information, visit Brazos Bend 100 Race.