Seafair Triathlon
Register Now!

SEAFAIR TRIATHLON

LAKE SAMMAMISH STATE PARK

JULY 25, 2021

SPRINT | SUPER SPRINT | DUATHLON

2 & 3 PERSON SPRINT RELAY | KIDS TRIATHLON

REGISTER NOW HERE

In 2021, the Seafair Triathlon will move from Seward Park to King County’s Eastside and will be located at Lake Sammamish State Park. The triathlon will be anchored at the park but will take place in both Issaquah and Sammamish cities. Why the move? For years, Seafair has wanted to continue to bring the Seafair Festival to a larger audience and spread the summer festival throughout King County.

We’re excited to host you for the 2021 triathlon and will continue to produce a first class event for all athletes ranging from the beginners to elites all the way down to the little triathletes. Register now and join us for our return to live triathlons!