You Have Qualified for Seattle’s 10k Open Water Swim 2025
Register

Congratulations! You have been accepted to register for this elite event. Please recruit a paddler, if at all possible. Your paddler will enhance the event’s safety and provide you feedings and water as needed. Have them sign up here.
Registration for this event closes at midnight on Tuesday, August 19th, or when all spaces are filled. Register early to secure your place.
Once you register, please train in earnest. Many marathon swimmers find the 10k Dart Training Plan useful. (If you have a training plan you’d like to share, please let us know.)
We will check in with you to ask how your training is progressing at least once before the swim. Approximately one week before the event, we’ll send you your Welcome Letter with all essential details.
“The safety aspect was very impressive. I don’t remember more safety awareness at any event. That is so reassuring and worth paying for.”
— Melinda B
Date: SATURDAY, August 23
Time: 9:00 AM – 3:00 PM
Cost: $195
MANDATORY SAFETY MEETING VIA ZOOM
7:30 pm PT, Thursday, August 21st
You must participate in this meeting in order to swim. Please factor this requirement into your decision to register. Meeting recording will not be available.
Details
Location: Lake Washington, Seattle. Details included in the Welcome Letter, which you will receive approximately two weeks before the event.
Length: 10k (Approximately 6.2 miles)
Level: Challenging. Please register only if you are confident in your ability to swim the entire distance.
Wetsuit: Your choice to wear one or not. Many swimmers get very cold spending this long in the water, so please be thoughtful about your choice.
THE VANQUISHER SWIM SERIES
Combine Seattle’s 10k with Tubby Trout. Save $20 and swim a total of 15k (9.32 miles). The Vanquisher Swim Series will test your limits while you have fun and save money.
Waiver/Safety Plan
To swim with us, you must read and agree to the Say Yes to Life Liability Waiver/Safety Plan.
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