Lake Wilderness Run Half Marathon
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Lake Wilderness running events
The Lake Wilderness running events are scheduled for June 6, 2026, at Lake Wilderness Park, 22500 SE 248th St, Maple Valley. The festival is part of a broader race weekend that includes triathlon, duathlon and relay team options. The event notes a long-standing history and is marking its 21st year with sponsorship from Ascend Dental.
This year there will be no half marathon. Organizers report the previously planned half marathon route cannot be completed because of trail washout conditions.
The remaining running options follow trails near the Cedar River and Lake Wilderness. The 10K follows the Cedar River and Lake Wilderness Trail and includes a few moderate up hills. The 5.5K is a jog or walk around Lake Wilderness Park. Walkers are permitted on the 10K and the 5.5K. Dogs and strollers are not allowed on these running routes.
Proceeds from the event support local causes; past distributions include donations to Backpack Buddies and Seattle Children’s Hospital and donations of stuffed animals to police and fire departments for use with children. Visit the organization's website for the most recent information.
