Sunday, July 21
Seward Park

Seafair Triathlon Registration

Prices & Increase Dates:

EventThru 4/5Thru 5/10Thru 6/21Thru 7/19On 7/20 & 7/21
Sprint Triathlon$65$75$85$95$105
3-Person Sprint Relay$75$90$100$110$120
2-Person Sprint Relay$70$80$90$100$110
Sprint Duathlon$65$75$85$95$105
Super Sprint Triathlon (New in 2019!)$60$70$80$90$100
Kids Long Course Tri$25$25$30$30$35
Kids Short Course Tri$25$25$30$30$35
Saturday Overnight Bike Racking (adult participants only)$10$10$10$10$15

2019 Seafair Triathlon registration is now open!

In an effort to be more inclusive and family friendly we have made the decision to move away from the Olympic Distance option. We have extended the distance of the sprint distance bike course and added a super sprint option for beginners!

Registration Options

Option 1 – Register Online

Online registration for the Seafair Triathlon will be available until Friday, July 19 at 11:59pm.



Option 2 – Pre-Race Packet Pick Up & Registration

Date: Saturday, July 20, 2019

Time: 12:30pm – 4:30pm

Location: Seward Park, Seattle

Participants will pick up all necessary equipment for race day including their timing chip, discipline bibs, swim caps and will have the opportunity to get your body marking done before race day. Participants will also have the opportunity to rack their bikes a day early (we will have 24-hour security in the transition zone). Cost is $15.


Elite Wave Entries:

To be placed in the elite wave, please send us your past three finish times (comparable distance) and overall placing to for consideration. Those placed in the elite wave WILL NOT be eligible to win age group awards, only prize money. The elite wave is for the Sprint Distance Triathlon only.

2018 Seafair Triathlon Race Results – HERE

2018 Seafair Triathlon Photos – HERE