Triathlon

Sunday, July 20th, 2025 from 7AM to 12PM

About The Event
Event Schedule
Food & Drinks
Parking & Accessibility
FAQs

Registration

About The Event

Whether you’ve completed a triathlon before or told yourself one day you might – this is your year, and this is your triathlon.

Featuring small wave sizes, multiple distance options, and team relay competitions, the Seafair Triathlon prides itself on hosting a range of participants from elite-level triathletes to beginners getting their first taste of triathlon competition.

Take a look at the list of events to see which event is right for you.

Event Schedule

Sprint Distance Triathlon
0.5 mile swim, 20KM (12.4 mile) bike ride, 5 Kilometer run

Sprint Duathlon
20KM (12.4 mile) bike ride, 5 Kilometer Run

Sprint Distance Relays
Same as the sprint course

Super Sprint Distance Triathlon
0.25 mile swim, 20KM (12.4 mile) bike ride, 5 Kilometer run

Kids Long Course
100-yard swim, 2-mile bike ride, 1-mile run

Kids Short Course
50-yard swim, 1-mile bike ride, 0.5 – .75 mile run (swim in water kids can touch in)

*All team participants in the relay category and individual duathlon category will also receive finisher medals after the race

More information available in March. Sign up for notifications.

Food & Drinks

Water, fruit, and healthy snacks will be available at the finish line post-race.

Map, Parking, & Accessibility

Event Map

Event Parking

Seward Park is closed to participant parking.

We recommend parking in the Seward Park neighborhood and riding your bike into the park.

Accessibility & ADA

Coming soon.

View Course Map

Event FAQ’s

Saturday, July 20 at Seward Park between 12:30pm – 4:30pm at the pre-race expo or on race day before 6:30am (please come Saturday to allow time for body marking)

YES! There will be prize money awards for the top finishers of the sprint distance elite-wave.

1st Place (m/f) – $200 & free entry to 2026 race
2nd Place (m/f) – $100 & free entry to 2026 race
3rd Place (m/f) – Free entry to 2026 race

Yes! There is a long and short course dedicated to kids age 4-12. Learn more.

We have events for children and adults of all athletic levels.

The transition area will be open and supervised starting at 6:00 a.m. on July 20th.

For the safety of all participants, only registered participants will be allowed in the transition area. Participants may leave their personal belongings in this secure area. Please rack your bike on your designated bike rack, which is determined by your race number.

Seward Park in Seattle, Washington

Gerk’s Ski & Cycle bike mechanics will also be located in the transition zone and available to make quick adjustments to your bike before the event. Gerk’s will be available when the triathlon opens, starting at 6:00 am.

2025 Seafair Triathlon participant top
2025 Finisher Medal
FREE Downloadable participant photos
Timing Chip, Swim Cap
Personalized Race Bib

Important Note: Goggles are not provided by the race, but highly encouraged!

Seward Park is closed to participant parking, we recommend parking in the Seward Park neighborhood and we recommend riding your bike in to the park.

Athletes can rack their bikes the morning of the race. Saturday bike racking will not be allowed in. Nobody without a race bib and body marking will be allowed in the transition zone on race day.

The average temperature of Lake Washington in July is typically about 68 degrees.

Ticket Info

Registration is now open for the 2025 Seafair Triathlon!

Questions?
Email info@fizzeventsnw.com

The Official Athletic Club of the Seafair Triathlon

The Washington Athletic Club in Seattle is a private club and a community of individuals that come together through family and social events, fitness, networking and more.