Lake Wilderness Triathlon and Run

JUN
5
2027
Triathlon, duathlon and running events at Lake Wilderness Park featuring lake swims, rolling bike routes and trails along the Cedar River.
Sat 5 Jun 2027
Sprint 13.76 5.5 mi Sprint 0.25 13.76 5.5 mi Olympic 27.54 6.36 mi Olympic 0.93 27.54 6.36 mi

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Lake Wilderness Triathlon and Run

Lake Wilderness Triathlon and Run takes place at Lake Wilderness Park in Maple Valley, Washington. The event offers multiple formats on the same day, including triathlons, relays, duathlons and running races. Registration fees listed for the event include $100 for standard triathlons and duathlons, $60 for relay teams, $70 for the 10K and $55 for the 5.5K.

Distances and formats include:

  • Olympic: Swim 0.93 miles, Bike 27.54 miles, Run 6.36 miles
  • Sprint: Swim 0.25 mile, Bike 13.76 miles, Run 5.5 miles
  • Sprint relay: Swim 0.25 mile, Bike 13.76 miles, Run 5.5 miles
  • Olympic relay: Swim 0.93 miles, Bike 27.54 miles, Run 6.36 miles
  • 10K: route along Cedar River trail and Lake Wilderness with aid every 2 miles
  • 5.5K: route along Cedar River trail and Lake Wilderness, a few rolling hills

Swims are held in Lake Wilderness with views of Mount Rainier. Bike courses run along rolling hills in Maple Valley and in some sections include Ravensdale. The run courses use the Lake Wilderness trail, a soft gravel path about 10 feet wide that follows the lake and the Cedar River. Packet pickup is available on race day; participants must present photo identification and packets may not be picked up for others. Visit the organization's website for the most recent information.

10 km
Lake Wilderness 10k
6 km
Lake Wilderness 5.5k
Lake Wilderness Duathlon Olympic
Lake Wilderness Duathlon Sprint
Lake Wilderness Olympic Triathlon
Lake Wilderness Sprint Triathlon

Events nearby

Beginner-friendly 2.8 mile group trail run at King County's Cougar Mountain with Teva demo shoes, post-run refreshments, and a chance to win Trailpeak shoes.
Free evening relay in Black Diamond where teams hunt six hidden ghosts in Civic Park, with costume and team-name awards and a bonus ghost prize.
Trail races at Cougar Mountain Regional Wildland Park near Seattle offering 5k, 7.6 mile, 19.5 mile and 50k courses through forested single track, rolling hills and marshes. Proceeds support King County Parks.
Final race of the Evergreen season at Grand Ridge Park, offering trail distances from 5 miles to 50K on looped forest courses.
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