Register for the 2019 Seafair Triathlon

Welcome to the 2019 Seafair Triathlon! 

Each participant of the Seafair Triathlon, with entry, will receive a participant shirt, finisher medal, and personalized bib! 

Seattle's only triathlon will take place on the shores of Lake Washington at Seward Park. Offering participants multiple disciplines on a flat, fast and picturesque triathlon course in the shadows of downtown Seattle. This race is a must do for all triathletes in the northwest. 

The event offers participants a unique opportunity to participate in a sprint distance triathlon or super sprint distance in an urban setting. Swimming in a protected cove, riding on closed roadways and running through Seward Park, this is the Pacific Northwest’s premier triathlon. 

Offering a Kids Triathlon as well, there is a distance for everyone in the family at the Seafair Triathlon! Join us in 2019 at the Seafair Triathlon with over 1,400 health enthusiasts taking part in the event.

Online registration for this event is currently closed

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