Test your endurance at the Mudskipper Sammamish Open Water Swim, an open water competition held at Lake Sammamish State Park in Issaquah, Washington. Athletes can push their limits on a well-marked one-kilometer diamond-shaped course, choosing from 1K, 3K, or 5K race distances accomplished by multiple laps. The race launches with a challenging mass start at Sunset Beach, offering a true test of open water skills. Backed by Sumarpo Wetsuits, the event welcomes swimmers of all experience levels and promotes not only high-level performance but also environmental responsibility and camaraderie within the open water community.