Brazos Bend 100
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Brazos Bend 100 : Needville, TX (Dec 6-7, 2025)
The Brazos Bend 100 is a multiday trail event at Brazos Bend State Park in Needville, Texas. Distances offered include:
- 100 miles
- 100 kilometers
- Marathon (26.2 miles)
- Half marathon (13.1 miles)
- Brazos Kids Kilometer and an Ultra Pacer option
The 100-mile distance is an official Western States Endurance Run qualifying race when finished within 32 hours. The event is presented by Trail Racing Over Texas and sponsored by Altra Running.
Course, aid stations, pacers and park rules
The course is a roughly 16.7-mile loop on wide, flat pathways with surfaces that include hard crushed rock, soft hiking trails under tree canopy, and smooth horse trails. The organizer states the course is 99.9% flat, with a single 10-foot rise over 0.1 mile. Under dry conditions many runners choose road shoes; some sections can become muddy when wet.
There are four staffed aid stations on course and a main Elm Lake start/finish area. Runners must carry their own hydration device - no cups will be provided. Pacers: 100M runners may use a pacer on the final two loops and 100K runners may use one pacer for the final loop; pacers are not allowed in the marathon or half marathon. Park passes are required for participants and attendees 13 years and older; state park camping must be reserved through the official reservation system. Visit the organization's website for the most recent information.