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Brazos Bend 100

Name: Brazos Bend 100
Start: 2025-12-06
End: 2025-12-07
Location: Needville, Texas

location_city Needville

location_on Texas

flag United States

calendar_today 06 Dec, 2025 – 07 Dec, 2025

directions_run Running

language Official Website

About the Event

December 6th-7th, 2025

Sponsored by Altra Running

Western States 100 Lottery Qualifier (sub 32 hour 100-mile) with 119 qualifiers in 2024!

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 four aid stations per loop. The top 3 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 get away with a road shoe. Conditions in December can have a mix of anything but are typically great for running. 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 parks 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 2025, AND the 100K or 100M in December 2025 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 2025 event is continuing to be updated as we get closer to event day, we do not expect any major changes but stay tuned to email for updates. A participant information packet will be shared in November.

Races Offered

100M

Dec 06, 2025

straighten

Distance — 100 Miles

terrain

Type — Road running

timer

06:00

100K

Dec 06, 2025

straighten

Distance — 100K

terrain

Type — Road running

timer

07:00

26.2M

Dec 06, 2025

straighten

Distance — 26.2 Miles

terrain

Type — Road running

timer

08:00

13.1M

Dec 06, 2025

straighten

Distance — 13.1 Miles

terrain

Type — Road running

timer

08:30

Brazos Kids Kilometer

Dec 06, 2025

straighten

Distance — 1K

terrain

Type — Road running

timer

12:00

Ultra Pacer

Dec 06, 2025

straighten

Distance — 16 Miles

terrain

Type — Road running

timer

12:00

Weather Overview

These values represent the 3-year monthly averages for December in Needville.

Temp (°C)

Feels Like (°C)

thermostat 10.9° / 20.0°

wb_sunny 8.4° / 18.2°

Wind (km/h)

Humidity (%)

air 12.8 /

water_drop 74.4%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 10.9° / 20.0°

wb_sunny 8.4° / 18.2°

air 12.8 km/h

water_drop 74.4%

About Needville

Needville is a city in Fort Bend County, Texas, United States. It is within the Houston–Sugar Land metropolitan area. The population was 3,089 at the 2020 census.