Sunday, July 22
Seward Park

BRI Seafair Triathlon Info

Thank you to all that participated in and made the 2018 BRI Seafair Triathlon a huge success!

2018 BRI Seafair Triathlon Race Results – HERE

2018 BRI Seafair Triathlon Photos – HERE

The 2018 Benaroya Research Institute Seafair Triathlon, Seattle’s ONLY triathlon, offers participants multiple disciplines on a flat, fast and picturesque triathlon course, while supporting autoimmune disease research. Taking place on the shores of Lake Washington at Seward Park, 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 an olympic or sprint distance triathlon 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 BRI Seafair Triathlon! Join us in 2018 at the BRI Seafair Triathlon with over 1,400 health enthusiasts taking part in the event.



At the Benaroya Research Institute at Virginia Mason (BRI), we are investigating how autoimmune diseases are connected and how they can be eliminated. We are making discoveries that lead to earlier detection, better treatments, prevention and cure.

Help fund the research that fuels the future by registering for the triathlon and making a donation or raising funds.. Every dollar brings us closer to game- changing therapies and cures that will improve millions of lives


Race Day Schedule

Saturday, July 21

12:30pm – 4:30pm – Saturday Pre-Race Packet Pickup & Body Marking

Sunday, July 22

5:15 a.m. – Transition Zone Opens
6:30 a.m. – Olympic Challenge Course Start
7:06 a.m. – Olympic Duathlon Course Start
7:20 a.m. – Sprint Course Start
7:40 a.m. – Sprint Relay Course Start
10:30 a.m. – Kids Short Course Start
11 a.m.  – Kids Long Course Start
Awards Ceremony to follow each wave finish 

Included with your race entry:
  • 2018 BRI Seafair Triathlon lightweight HOODIE
  • Event Finisher Medal
  • Timing Chip, Swim Cap
  • Personalized Race Bib

Transition Area
The transition area will be open and supervised starting at 5:15 a.m. on Sunday, July 22. 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. Athletes can rack their bikes the morning of the race, or a day early on Saturday, July 21 for a $10 fee ($15 at expo). Nobody without a race bib and body marking will be allowed in the transition zone on race day.

Race Distances

Olympic Distance Triathlon – 1-mile swim, 20-mile bike ride, 10K run

Sprint Distance Triathlon – 0.5 mile swim, 12-mile bike ride, 5K run

Olympic Duathlon – 20-mile bike ride, 10K Run

Sprint Distance Relays – Same as the sprint course

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

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

Triathlon Course Information

Swim Course – Counter-clockwise swim through Andrew’s Cove (1 lap for sprint, 2 laps for olympic) at the north side of Seward Park. The cove is protected from wind and boats. There will be lifeguards onsite if a rest is needed or to help you safely finish the swim

Bike Course – Participants will ride north along Lake Washington Blvd until the turn-around point (McGilvra for sprint, Madison Park for olympic) where athletes will ride south back to Seward Park on Lake Washington Blvd. Olympic distance athletes will have an out/back portion on Seward Park Ave as well before returning to the transition zone. All roads are 100% closed to traffic and monitored by Seattle PD. Enjoy the breathtaking views of Lake Washington, Bellevue skyline and Mt. Rainier on your ride.

Run Course – Either one loop (sprint) or two loop (olympic) course through the paved running trails surrounding Seward Park. An on-course water station will be located at the beginning of the run discipline and at the halfway point of the loop course.

Course Maps


Event Parking
Parking is not permitted at Seward Park for the Expo or the Triathlon. Participants may park in the surrounding neighborhoods. Please be respectful of the residents who share their neighborhood with us and abide by all parking restrictions, keeping noise to a minimum. There will be a “Drop Off – Load/Unload Zone” on Juneau St. directly in front of the park entrance. *Please note: Lake Washington Blvd. closes to traffic at 6 a.m. To access the park via car or on foot please use Juneau St. Do not leave your car on Juneau for any period of time or you will be at risk of being towed by Seattle PD.


Prize Money and Awards
Prize money will be awarded to the top three individuals (male and female) competing in the elite wave of the Olympic Distance Triathlon. Only individuals competing in the elite wave will be eligible to win prize money. Elite athletes are not eligible to win age group awards. There will be no elite category or prize money for individuals competing in the sprint triathlon.

1st Place – $200
2nd Place – $100
3rd Place – Free entry for 2019 BRI Seafair Triathlon

All other awards will not be announced. Winners will receive awards following the race via email

To be placed in the elite wave, please send us your past three finish times, race distances and overall placing to