Territorial Triathlon Series

The TRI-It Racing Clubs Territorial Triathlon Series takes place at Guthrie Lake in Guthrie, Oklahoma, featuring a no-wake lake ideal for calm swimming conditions in a protected cove. The event includes multiple race distances: Olympic (0.9 mi swim, 24 mi bike, 6 mi run), Sprint (550 yd swim, 18 mi bike, 3 mi run), and Super Sprint (300 yd swim, 6 mi bike, 2 mi run), along with aquabike and duathlon options. A special 55+ category offers a shorter run distance.

The series hosts the 2025 USAT Oklahoma State Championship for Olympic and Sprint distances. The course offers spectator-friendly views along the shoreline, ample parking near transition, and easy access to local amenities. Visit the organization's website for the most recent information.