What started out as a single Halloween sprint event in Keller, TX has developed into three, scary sweatfests! A Monster Triathlon (Keller, Texas) a Monster Triathlon (Denton, Texas) and Kids Triathlon (Keller, Texas). 2014 marks year 9 for the Monster Triathlons, which sell-out months in advance with 650 athletes. (We think its because people need to get their costumes ready). The distances are FAST for the experienced athletes and just right for the beginner.

At Monster Keller, you will enjoy the beautiful indoor pool of the Keller Natatorium for a 300 meter swim; jump on your bike for 12 miles, and finish strong with a 3.1 mile run. 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!