Monster Triathlon
Sun, Oct 11, 2026, 7:30 AM CDT
- Location
- Keller, TX
- 1000 Bear Creek Pkwy, 76248
- Type
- TRIATHLON
Sign up and verify details on the organizer’s official page.
At a glance
End your triathlon season with a scream at this energetic event, featuring fast courses, beginner-friendly options, and wonderful costumes.
- Fun
- Scenic
- Competitive
- Quirky
Fun
Scenic
Competitive
QuirkyThe Monster Triathlon offers a spirited way to conclude your multi-sport season in Keller, TX. Celebrating its 21st year, this popular event draws over 700 athletes with its fast courses tailored for experienced triathletes and a new Super Sprint option perfect for beginners. Expect a high-energy atmosphere with wonderful costumes encouraged, making for a memorable finish to your racing year. The run unfolds on the beautiful Keller trails, adding a scenic touch to the challenge.
What to expect
- Swim in 50-meter lanes that are 9 feet wide.
- Bike a new two-loop or a three-loop course.
- Run on the beautiful Keller trails, all while enjoying a high-energy atmosphere where costumes are encouraged.
Standout details
- Wonderful costumes encouraged
- Beautiful Keller trails for the run
- Fast courses for experienced athletes
- Beginner-friendly Super Sprint option
Auto-drafted from the public listing — confirm details on the official event page before signing up.
Distances & registration
6 optionsRegistration for all distances is through the official signup link above.
Monster Triathlon Age Group (Three Loop bike)
Sun, Oct 11, 7:30 AM CDT · From $60.18
Opens Oct 14, 2025, 8:00 PM CDT · Closes Oct 11, 2026, 5:00 AM CDT
Monster Triathlon Athena (female 165lbs+) (Three L…
Sun, Oct 11, 7:30 AM CDT · From $60.18
Opens Oct 14, 2025, 8:00 PM CDT · Closes Oct 11, 2026, 5:00 AM CDT
Monster Triathlon Clydesdale (male 220lbs+) (Three…
Sun, Oct 11, 7:30 AM CDT · From $60.18
Opens Oct 14, 2025, 8:00 PM CDT · Closes Oct 11, 2026, 5:00 AM CDT
+ 3 more optionsHide
Monster Triathlon Age Group (Two Loop Bike)
Sun, Oct 11, 7:30 AM CDT · From $89.06
Opens Apr 10, 2026, 6:25 AM CDT · Closes Oct 11, 2026, 5:00 AM CDT
Monster Triathlon Athena ( female 165lbs) (Two Loo…
Sun, Oct 11, 7:30 AM CDT · From $89.06
Opens Apr 10, 2026, 6:25 AM CDT · Closes Oct 11, 2026, 5:00 AM CDT
Monster Triathlon Clydesdale (male 220lb) (Two Loo…
Sun, Oct 11, 7:30 AM CDT · From $89.06
Opens Apr 10, 2026, 6:25 AM CDT · Closes Oct 11, 2026, 5:00 AM CDT
The course
- Rolling
- Timed race
From the organizer
Rather than end the multi-sport season with a bang, these athletes end their season with a SCREAM!
Monster Triathlon 2026 marks year 21 and will sell-out early with over 700 athletes! The distances are FAST for the experienced athletes and just right for the beginner.
The Swim has 50 meter lanes that are 9 ft wide, the bike is a two ( NEW ) or three loop course, and the run takes place on the beautiful Keller trails. The total distances are the following:
NEW SUPER SPRINT OPTION: TWO LOOP BIKE Swim: 300 Meters Bike: 10 Miles Run: 5K
SPRINT OPTION: THREE LOOP BIKE Swim: 300 Meters Bike: 14.5 Miles Run: 5K
Each event is a little different at the finish line. Some have live bands, but ALL of the events are filled with energy and WONDERFUL costumes which are ENCOURAGED! This is a great race to end your triathlon season!
WEATHER POLICY
In the event of inclement weather, the start time of this event may be delayed by up to 1 hour. Past this time, the event course may be shortened or altered to protect the participants.
If conditions turn unsafe, the event may be cancelled. Event changes and cancellations are at the discretion of the Race Director.
We always strive to produce a full and safe sporting event, but sometimes the weather conditions can affect those plans.
Considerable amount goes into planning a sporting event and we do so with the best intentions. Unfortunately, no one can control the weather and race directors are not the exceptions.
Our goal is to always produce a full event as scheduled and only modify these plans due to safety concerns some of which can be caused by weather conditions.
Thank you for your understanding of these policies and we appreciate your participation.
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