Registration
Seafair Triathlon Registration
Prices & Increase Dates:
| Event | Thru 4/10 | Thru 5/22 | Thru 6/26 | Thru 7/17 | 7/18 - 7/19 |
|---|---|---|---|---|---|
| Sprint Triathlon | $85 | $95 | $105 | $115 | $125 |
| Super Sprint Triathlon | $85 | $95 | $105 | $115 | $125 |
| 3-Person Sprint Relay | $95 | $105 | $115 | $125 | $135 |
| 2-Person Sprint Relay | $90 | $100 | $110 | $115 | $130 |
| Sprint Duathlon | $70 | $80 | $90 | $100 | $110 |
| Kids Long Course Tri | $30 | $30 | $35 | $35 | $40 |
| Kids Short Course Tri | $30 | $30 | $35 | $35 | $40 |
REGISTER NOW HERE
Once again, the best triathlon in the northwest will return to the shores of Lake Washington at Seattle’s Seward Park and feature multiple adult disciplines as well as the popular Seafair Kids Tri! See you July 19.
Registration Options
Option 1 – Register Online
Online registration for the Seafair Triathlon will be available until the start of the race on July 19th (unless event sells out) with the price increases listed above. There is no in-person registration option, only via the registration site.
Option 2 – Saturday Pre-Race Packet Pick Up & Registration
Date: Saturday, July 18, 2026
Time: 12:30pm – 4:30pm
Location: Seward Park
5900 Lake Washington Blvd, Seattle, WA 98118
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. There will be no early bike racking in 2026.
Elite Wave Entries:
To be placed in the elite wave, please send us your past three finish times (comparable distance) and overall placing to [email protected] 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.
I can’t make it, how do I defer my entry to next year?
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- Go to: www.runsignup.com
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- Click the circle silhouette in the upper right hand corner
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- Log in to your account
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- Click Profile
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- Find the Seafair Triathlon in your upcoming events tab
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- Select “Manage Registration”
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- At the top, either select “Transfer to someone else” or “Defer Registration”
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- Follow the prompts on screen
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- *If you’ve chosen to defer, we will automatically enter you in next year’s race and email you a confirmation when it happens (after registration is open). You can always defer again if needed
Seafair Triathlon Training Clinics & Coaching Opportunities
Interested in learning more about triathlons or meeting your goals? Seafair is happy to partner with TN Multisports, based in Seattle. They have multiple triathlon coaching options from beginners to elites. Interested in learning more? Visit www.tnmultisports.com to learn more.
For 2026 – we’re offering 3 clinic options for participants, featuring an 8 week training program as well as two single day clinics:
8 Week Beginner Triathlon Training Experience
Join the coaching team of Washington Athletic Club and TN Multisports for an 8-week beginner triathlon training experience designed to get you to the start line feeling prepared, strong, and excited.
📅 Program Dates: May 25 – July 19 (Race Day!)
💲 Cost: $300
🔗 Sign-Up: [email protected]
You’ll receive a structured program through TrainingPeaks with guided swim, bike, and run workouts each week—plus access to experienced coaches who will support you every step of the way. Along the way, you’ll also gain access to our SeaFair clinics, sponsor perks, and plenty of encouragement.
What you’ll get:
- 8-week beginner-friendly triathlon training plan
• Weekly structured workouts
• Coach guidance + Q&A support
• Two hands-on triathlon clinics
• Sponsor deals + access to team workouts (1–2 per week)
• Race-day confidence
🏊♀️ Open Water Swim Clinic
📍 Location: Madison Park
📅 Date: Sunday, June 14
⏰ Time: 8:00–9:00 AM
💲 Cost: $65
🔗 Sign-Up: OWS-TNM
This beginner-friendly clinic is designed to replace race-day nerves with confidence.
Requirements:
- Must be able to swim 500 yards comfortably and continuously
• Bright-colored swim cap
• Safety swim buoy (New Wave Brand or similar)
We’ll Cover:
- Swim course layout + what to expect
• Open water swim skills and drills
• Swim starts and exits
• How to seed yourself at the start
• Pacing strategies for beginners
• Navigation + sighting in open water
• Breathing patterns for calmer swimming
• Wetsuit fit + fast-removal tips
• Smooth swim-to-bike transitions
• Goggle recommendations for open water swimming
Recommended Gear:
- Wetsuit
• Light-tinted goggles
• Towel
• Warm clothes for pre- and post-swim discussion
🚴♀️ Transition Clinic + Run Course Preview + Strategy Session
📍 Location: Seward Park
📅 Date: Saturday, June 20
⏰ Time: 8:00 AM
💲 Cost: $65
🔗 Sign-Up: Transition/Run/Course Strategy
Learn how to move through transitions smoothly and efficiently, review the course layout, and run the actual race course.
You’ll Learn:
- How to set up your transition area like a seasoned triathlete
• Gear checklist so you’re fully prepared
• Tips and tricks for faster, smoother transitions
• Key insights on the full race course
• Run course breakdown
• Pacing strategies
• Answers to all your race-day questions
PAST RESULTS & PHOTOS
2025 Seafair Triathlon Race Results & Photos – HERE
2024 Seafair Triathlon Race Results & Photos – HERE
2023 Seafair Triathlon Race Results & Photos – HERE
2022 Seafair Triathlon Race Results & Photos – HERE
2021 Seafair Triathlon Race Results & Photos – HERE
2019 Seafair Triathlon Race Results & Photos – HERE
2018 Seafair Triathlon Race Results – HERE & Photos HERE
