Seafair Triathlon
- Date Sun 20th July 2025
- Time 7:00AM PDT
- Location Seattle, Washington
- Price $39.96 - $133.12
- Races 7 races
- Distances Sprint
Last chance to enter
Race day is fast approaching
Event summary
Not only is the Seafair Triathlon a fantastic opportunity for seasoned triathletes, but it also offers a Kids Triathlon, ensuring that the whole family can join in on the fun. With over 1,500 health enthusiasts expected to take part, the excitement is palpable. Don't miss your chance to be part of Seattle's only triathlon! Be sure to register soon, as spots are filling up quickly. Join us for a day of fitness, community, and unforgettable memories at the 2025 Seafair Triathlon!
Organiser's Description
The Triathlon is very close to capacity. If you click the "register" button and are unable to sign up for your race distance/discipline it is because we are currently at capacity. Check back periodically - as participants choose to defer their registration to 2026 a spot will open up. It is first come first serve. We hope to see you at the event!
Welcome to the 2025 Seafair Triathlon!
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 2025 Seafair Triathlon with over 1,500 health enthusiasts taking part in the event.
Races
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Sprint Triathlon
Incl. $12.16 Fee & Participant Shirt
Sun 20th July 2025 (7:00AM PDT)
$122.16
Sprint Distance Triathlon 0.5 mile swim, 14-mile bike ride, 5 Kilometer run -
Super Sprint Triathlon
Incl. $11.68 Fee & Participant Shirt
Sun 20th July 2025 (7:00AM PDT)
$116.68
Super Sprint Distance Triathlon 0.25 mile swim, 14-mile bike ride, 5 Kilometer run -
3 Person Sprint Relay
Incl. $13.12 Fee & Participant Shirt
Sun 20th July 2025 (7:00AM PDT)
$133.12
Sprint Distance Relays Same as the sprint course -
2 Person Sprint Relay
Incl. $12.64 Fee & Participant Shirt
Sun 20th July 2025 (7:00AM PDT)
$127.64
Sprint Distance Relays Same as the sprint course -
Sprint Duathlon
Incl. $10.72 Fee & Participant Shirt
Sun 20th July 2025 (7:00AM PDT)
$105.72
Sprint Duathlon 14-mile bike ride, 5 Kilometer Run -
Kids Triathlon - Long Course
Incl. $4.96 Fee & Youth Participant Shirt
Sun 20th July 2025 (11:00AM PDT)
$39.96
Kids Long Course 100-yard swim, 2-mile bike ride, 1-mile run -
Kids Triathlon - Short Course
Incl. $4.96 Fee & Youth Participant Shirt
Sun 20th July 2025 (11:00AM PDT)
$39.96
Kids Short Course 50-yard swim, 1-mile bike ride, 0.5 .75 mile run (swim in water kids can touch in)
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