2025 Race Updates See RunSignup
Please check out the RunSignup event page for race information. We have updated the site with our Armadillo Information (AI) Live Chat assistant that can answer a lot of your questions right away.
Most of our event information has moved from this page to RunSignup:
Event Description
This is the December edition of our popular Brazos Bend races with the marquee event being the 100-mile.
The Brazos Bend course is the fastest trail in Texas trail running. The course is 99.9% flat, and the only hill is 10 feet. Other than that you will be running on flat surfaces that move from hard crushed rock, soft hiking trails under tree canopy, and smooth horse trails. Conditions in December can have a mix of anything but are typically great conditions 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 park. Enjoy them on your run, from a distance, and you may get some unique race photos!
Western States 100 Qualifier
The Brazos Bend 100 miler distance has been an official Western States Endurance Run qualifying race for over five years. Since BB100 is held in early December, around the same time as the WSER lottery, our sub-32 hour finish will earn you a lottery ticket to the following year's lottery, for the next years WSER.
Example: If you qualify in 2025 you will earn a 2026 raffle ticket for the 2027 WSER lottery. Must finish under 32 hours to qualify. Official letter from WSER for 2025:
"the 2025 Brazos Bend 100 has been selected as a qualifying race for the 2027 Western States 100. Runners who complete the race within 32 hours will qualify to enter a lottery where the runners for Western States will be selected.
The qualifying period for the 2027 Western States will be from November 3, 2025 through November 1, 2026. The lottery will be held on December 5, 2026, and the race itself will be run on June 26-27, 2027.”
Qualifiers from last years (2024) Brazos Bend 100 can enter the upcoming lottery being held on December 6th - we will have a live feed of the lottery during our event. Last year two of our runners were selected while on the course!
2025 Schedule
Monday, December 1st, 2025:
Packet Pickup sponsored by Altra Running and Good Times Running Co.
Noon to 7 PM at Good Times Running Co,
22764 Westheimer Pkwy #650, Katy, TX 77450
Friday, December 5th, 2025
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Packet Pickup & Merch: Noon to 7 PM at Elm Lake Pavilion
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Personal Support Area Setup at Elm Lake, set up your canopies, chairs, gear, etc. and can leave it setup overnight but no camping in this area.
Saturday, December 6th, 2025
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Packet Pickup Elm Lake Pavilion (Ultra Runners Only till 7 AM): 5 AM to 8:30 AM
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100M Start: 6 AM
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100k Start: 7 AM
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Marathon Start: 8 AM
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Half Marathon Start: 8:30 AM
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Free Kids Race: Noon
Sunday, December 7th, 2025
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Finish Line Closes (all events cutoff): 2 PM
Cutoffs
Finish Line Closes (all races end): Sunday 2 PM
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32H 100MI
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31.5H 100k
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31H Marathon
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30.5H Half Marathon
Race Director will assess each runners progress and has the ultimate decision, along with the Medical Director and Park Staff, throughout the event for runners to continue additional loops or not for their own safety, venue permit timing, and courtesy to our staff and volunteers.
Pacers & Crew
Pacer registration is open on RunSignup during the final month before the race.
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.
We will have over 300 ultra runners and tons of support, you will not be alone!
NO pacers in the marathon, or half marathon events.
You may only have 1-person pacing you at a time. Pacers can only start/finish at the Main Start/Finish (Elm Lake) after check-in and must be on foot.
Pacers will register the same way participants register, pacer bibs available at check-in or the start/finish timing tent.
Crew and spectators are allowed at any aid station in limited amounts. All of them you will need to shuttle, walk, or bike to access (there is not stopping a vehicle at an aid station). Crew can not use aid station supplies. Pacers have full access to the aid stations (same as registered runners).
Crew, pacer, and support numbers will be limited by vehicle, support for individuals should carpool in a single vehicle. Excessive amounts of vehicles per runner will not be permitted to enter the park (there will be no parking available). All individuals associated with the race, including crew, support, pacers are permitted to ride the parking shuttles in the park for access to Elm Lake pavilion.
Pacer registration includes: Park Access/Pass, Trail Access, Parking, Shuttle, Expo Access, Pacer Bib, Aid Station Access/Support.
Passes, Parking, and Camping
Driving and parking on paved surfaces only, areas will be designated and guided by park staff. Park police will strictly monitor for speed and cars stopped on roadways. Shuttles will run between parking lots and the Elm Lake Start/Finish.
Park passes are included in registration for all registered participants, pacers, volunteers, and reserved campers.
Guest park passes purchased through TROT are required for all individuals 13 years and older. Annual Park Passes are not accepted during special events for event attendees. Guest park passes will be available on the TROT store in the final month leading up to the race.
State Park camping must be reserved via the online reservation system. No car camping or overnighting at Elm Lake.
Brazos Bend Powersports & RV (map): Additional primitive camping, no-hookup RV spots, and overflow parking available across the street from the park at the Brazos Bend RV Park, reservation not required (do not contact BBRV).
SHIRT, 100K LONG SLEEVE, & 100M HOODIES
The ugly Christmas sweater designs are back: Hoodies for 100M, long sleeve for 100K, and T-Shirts for all other events. Extra shirts and other swag will be available at the merchandise table. Thanks to our sponsor Altra and apparel supporter Recover Brands. Stay tuned for the 2025 design and other swag options.
MEDALS & BUCKLES
Buckles for 100M and 100k.
All finishers receive an event-specific finishers award: 100M Buckle, 100k Buckle, Marathon Medal, and Half Marathon Medal. Specific "Under xx Hours" buckles are while supplies last and are being revised for 2025, stay tuned!
Awards and Cash Prizes
Cash prize purse for the 100 Mile:
First Place Male & Female: $800
Second Place Male & Female: $400
Third Place Male & Female: $200
Prizes for Top Overall and 10-year Age Category winner prizes for all events in both Male and Female categories: U20, 20-29, 30-39, 40-49, 50-59, 60-69, 70+
BB50 & BB100 CHALLENGE COIN
Run both the Brazos Bend 50 (50K or 50M) and the Brazos Bend 100 (100K or 100M) in the same calendar year to earn a bonus Brazos Bend Challenge Coin:
50M + 100M = 150M Coin
50M + 100K = 150K Coin
50K + 100M = 200K Coin
50K + 100K = 150K Coin
COURSE & MAPS
See the RunSignup event page for all details.
VOLUNTEER
Earn future race credits, race swag, free park pass, food, and volunteer hours (as needed). Club/Team/Group support options are available as well for aid station takeovers (please email for aid station takeovers).
More spots will be added as we approach the event.
See more info on our volunteer page: VOLUNTEER WITH TROT
SPONSORS & VENDORS
Want to be an expo vendor or sponsor? Inquire here.
Note: We do not associate with any products or services that are not sport-safe or against World Athletics Rules & Regulations (IV Treatments etc.)