Brazos Bend 100

Needville, United States • 6-7 Dec 2025

Event overview

Brazos Bend 100 takes place December 6-7, 2025 at Brazos Bend State Park in Needville, TX (21901 Farm to Market Rd 762). The event features multiple distances:

  • 100M
  • 100K
  • Marathon (26.2M)
  • Half Marathon (13.1M)
  • Brazos Kids Kilometer
  • Ultra Pacer

The 100-mile distance is an official Western States Endurance Run qualifier; finishers within 32 hours earn eligibility for the WSER lottery. Cash prizes are offered for the 100M overall top three (male and female): $800, $400, and $200. Finishers receive event-specific awards: buckles for the 100M and 100K, medals for marathon and half marathon.

Course, support and rules

The course is a roughly 16.7-mile loop on mostly flat crushed gravel, hiking and horse trails; the course is described as 99.9% flat with a single 10-foot rise. Brazos Bend will operate four staffed aid stations on the course plus unmanned water for shorter events. All runners must carry their own hydration device; aid stations will not provide cups. Aid station supplies are for registered runners and pacers only.

Pacing and crew rules: 100M runners may have one pacer on the final two loops; 100K runners may have one pacer on the final loop. No pacers are allowed in the marathon or half marathon. Park pass and camping rules apply; special event park passes are required for individuals 13 and older and annual park passes are not accepted for event attendees. Cutoff limits are set per distance (for example, 100M - 32 hours). Visit the organization's website for the most recent information.

Race information

UTMB 20K UTMB 100K
100 km
100k
100m
13.1m
26.2m
Brazos Kids Kilometer
Ultra Pacer
Visit the organization's website for the most recent information.
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