Triathlon

Q: Who can participate?

We are SO excited to host over 1,400 triathletes at Seward Park this year.Seattle’s ONLY Triathlon will once again take over the shores of Lake Washington this summer, and Seward Park is the perfect backdrop for this flat, fast, and picturesque triathlon course in the shadows of Downtown Seattle. We have events for children and adults of all athletic levels.

Q: Can I rack my bike the night before?

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.

SUNDAY, JULY 20TH, 2025 FROM 7AM TO 12PM

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

Ticket Info

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 Triathlon
.5 Mile Swim, 14.8 Mile Bike Ride, 3 Mile Run
Super Sprint Triathlon
.25 Mile Swim, 14 Mile Bike, 5K Run (Great for the beginner triathlete!)
Sprint Duathlon
14 Mile Bike, 5K Run
3 Person Sprint Relay
.5 Mile Swim, 14.8 Mile Bike Ride, 3 Mile Run (Each person completes one segment)
2 Person Sprint Relay
.5 Mile Swim, 14.8 Mile Bike Ride, 3 Mile Run (1 person completes 1 segment, other person completes 2)
Kids Triathlon – Long Course
100 Yard Swim, 2 Mile Bike Ride, 1 Mile Run
Kids Triathlon – Short Course
50 Yard Swim, 1 Mile Bike, .5 Mile Run (Kids can touch the bottom the entire time of Swim)

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

Coming soon.

Event Parking

Amazon lots and street parking is free – garage parking is available nearby. View map.

Accessibility & ADA

Coming soon.

View Course Map

Event FAQ’s

We’re working on it! Sign up to be notified when details are announced.

Yes!

We are SO excited to host over 1,400 triathletes at Seward Park this year.Seattle’s ONLY Triathlon will once again take over the shores of Lake Washington this summer, and Seward Park is the perfect backdrop for this flat, fast, and picturesque triathlon course in the shadows of Downtown Seattle.

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 shirt
• Event Finisher Medal
• FREE downloadable participant photos (average of 4+ per participant)
• Timing Chip, Swim Cap
• Personalized Race Bib
• No Awards Ceremony in 2025 — All awards/finisher certificates will be electronic and downloadable

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.

Ticket Info

Tickets information available March 2025.

Questions?
Email info@fizzeventsnw.com

Get Tickets Now

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.