2023 Seafair Triathlon

Register for 2023 Seafair Triathlon

Welcome to the 2023 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 once again 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 July for the 2023 Seafair Triathlon with over 1,500 health enthusiasts taking part in the event.
Select Category
.5 Mile Swim, 14.8 Mile Bike Ride, 3 Mile Run
Great for the beginner triathlete! .25 mile swim, 14-mile bike, 5K run
.5 Mile Swim, 14.8 Mile Bike Ride, 3 Mile Run (Each person completes 1 segment)
14 Mile Bike, 5K Run