The T-Rex Triathlon series features races in June, July and August. Same course throughout: 0.5 mile swim, 12.4 mile bike and 3.1 mile run.
Stegosaurus: June 2, 2021
Triceratops: June 30, 2021
Pterodactyl: July 28, 2021
T-Rex: August 25, 2021
Race Location: Island Lake Recreation Area
Start Time: 6:00p.m. Distance: .5 Mile Swim, 12.4 Mile Bike, 3.1 Mile Run
The Bike and Run portions are on ALL PAVED paths! It might be a wet one! The Head Cretaceous Creature says we’ve never had to cancel an event because of the weather. Rain or shine
08/26/2026
Great Finish! T-Rex Tri 2026 Sustainability Report Our final triathlon of 2026 was the T-Rex Tri, a sprint triathlon or duathlon at Island Lake State Recreation Area in Brighton. The RF Events crew continued last year’s tribute to the Flintstones, …
08/24/2026
Photos from the 2026 T-Rex Triathlon & Duathlon are now available!
Find photos from 2026 T-Rex Triathlon and Duathlon | GeoSnapShot Find photos from 2026 T-Rex Triathlon and Duathlon at GeoSnapShot. Discover photos and videos from your favorite event by selfie search, bib number and more!
08/21/2026
That’s a wrap on the 2026 T-Rex Triathlon & Duathlon! Thank you to everyone who raced, volunteered, cheered, and helped make another summer of swimming, biking, and running at Island Lake a great one.
A huge thank you to Playa Bowls for serving as the presenting sponsor of the T-Rex Series and supporting our athletes all season long. And congratulations to the Ann Arbor Triathlon Club on defending their title as T-Rex Series Cretaceous Club Champions!
Race photos are being uploaded now and will be shared in a separate post soon. Thanks for a great season, and we’ll see you next year!
08/18/2026
For those racing the 2026 T-Rex Triathlon & Duathlon tomorrow, the water temperature is 79.3F.
08/18/2026
A huge thank you to Playa Bowls for fueling the T-Rex Series as our presenting sponsor! Every finisher at the 2026 T-Rex Triathlon & Duathlon will receive a delicious post-race açaí bowl, thanks to their incredible support. They'll also be on-site with additional bowls available for spectators and anyone ready to refuel after the race. Check them out at PlayaBowls.com!
08/13/2026
The 2026 T-Rex Triathlon & Duathlon needs YOU! Join us at Island Lake Recreation Area on Wednesday, August 19, and help make the final race of the T-Rex Series a great one. We’re looking for volunteers to help with everything from athlete support and course operations to the finish line and more. Come be part of the action, support our racers, and earn RF Events volunteer perks while you’re at it! https://haku.ly/86cf74f293
08/12/2026
ONE WEEK TO GO! The 2026 T-Rex Triathlon & Duathlon is coming up fast, and it’s your last chance to race with the dinosaurs this summer! Join us at Island Lake Recreation Area on August 19th for the final event of the T-Rex Triathlon & Duathlon Series and close out the season with one more swim, bike, and run. There’s still time to get on the starting line. Register today at https://haku.ly/ddcaed03e6
08/05/2026
Just 2 WEEKS until the 2026 T-Rex Triathlon & Duathlon stomps back into Island Lake Recreation Area! Whether you're chasing a PR, tackling your first multisport event, or just looking for a fun summer race night, this prehistoric adventure is almost here. Don't miss the final event in the 2026 T-Rex Series! Register at https://haku.ly/ddcaed03e6
07/28/2026
🦖 Prehistoric speed. Summer evening vibes. Zero weekend sacrifice. The 2026 T-Rex Triathlon & Duathlon!
The finale of the T-Rex Triathlon & Duathlon Series is right around the corner! We’re heading back to Island Lake Recreation Area for one final midweek throwdown on Wednesday, August 19th at 6:00 PM.
CRITICAL RACER UPDATE:
The deadline to guarantee your official race shirt and secure your exact size for the finale is Wednesday, July 29th! Don't leave your final T-Rex swag to chance.
Swim. Bike. Run. Stomp.
Claim your spot on the start line and bring the series home!
Lock in your shirt & size now: https://haku.ly/52805ea042