The Seattle Open Water Swim

The Seattle Open Water Swim is an annual charity open water swimming event held in Seattle, Washington.

The 2024 Seattle Open Water Swim has a new venue!

The location of the event has varied in the past, but looks to be making Lake Sammamish State Park its venue home for the foreseeable future.

The view from Sunset Beach across Lake Sammamish, the latest venue for the Seattle Open Water Swim
Lake Sammamish State Park is the latest Seattle venue for the swim

The 2024 race route passes four buoys in a huge quadrilateral off of Sunset Beach.

Lake Sammamish State Park is a beautiful and peaceful area close (just 20 minutes) to Downtown Seattle. A park pass is usually required to enter the Lake Sammamish State Park, and costs $10 for the day.

The Seattle Open Water Swim is for a great cause

The swim raises money to support the Fred Hutch Cancer Center which funds early stage research and clinical trials. 

Participants need to register in advance, pay a registration fee, and sign waivers.  Participants must meet minimum fundraising requirements of about $3-500 USD depending on race category and age.

Race distances

The event caters to swimmers of all skill levels, offering distances of 1/2 mile, 1 mile or 2 miles. There is a Kids’ Splash 50m freestyle open water swim for under 11s. You can also swim the event virtually in order to raise money for the cancer center!

The Seattle Open Water Swim has an incredible atmosphere and there is an incredible sense of community and camaraderie among participants, offering a chance for swimmers to challenge themselves, enjoy the water, and connect with fellow open water enthusiasts.

Post race swimming adventures

There’s no longer camping allowed in the state park, except for the Youth Camp. However, the State Park is still an awesome place to open water swim. If you are taking the kids along, there are usually two roped swimming areas.

Another awesome kid-friendly beach close by is at Pine Lake Park. The water is marked off into different depths and there is plenty of safe shallow water.

Chism Beach Park is a surprising gem a few minutes from Bellevue center. We love to swim here at sunset!

If you are on vacation, consider taking sticking around for the Last Splash of Summer which typically happens the following week!

The Seattle Open Water Swim
Luther Burbank Park
2040 84th Ave S.E. Mercer Island,
Seattle WA 98040
Race time: September 7, 2024 6:00 am
Distance: 50 meter kids' splash, 1/2 mile, 1 mile, 2 miles
Other information:

Wetsuits are highly recommended as it can be C-C-C-C-C-COLD!

We do our best to keep the race directory pages as up-to-date as possible, but race information is apt to change often and your best bet for comprehensive race information is ALWAYS the race website. If you have an error or an update you'd like to tell us about, please send us a message here!

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