Maple Valley

Lake Wilderness Triathlon

JUN
6
2026
Join the 20th anniversary Lake Wilderness Triathlon on June 6, 2026 at Lake Wilderness Park. Choose from Olympic and Sprint triathlons, a half marathon, 10K, 5K, relays and a duathlon while supporting local charities.
Sat 6 Jun 2026
Maple Valley, Washington
Website
Sprint Triathlon Olympic Triathlon Duathlon

Always double-check with the organizer's website! This page may contain affiliate links.

Event details

The Lake Wilderness Triathlon takes place on June 6, 2026 at Lake Wilderness Park, 22500 SE 248th St, Maple Valley. The event marks the 20th anniversary of the race. Ascend Dental is listed as a sponsor.

All event registration rates increase on April 26 and May 24.

Race types

The event program includes:

  • Olympic triathlon
  • Sprint triathlon
  • Half marathon
  • 10K
  • 5K
  • Relay teams
  • Duathlon option

Triathlon events contain swim, bike and run segments. Running events are offered separately from the triathlon distances.

Community and organizer notes

The organizers report charitable contributions including $5,000 to Backpack Buddies, $5,000 to Seattle Children’s Hospital, and donated stuffed animals distributed to local police and fire departments. Lake Wilderness Triathlon LLC reserves the right to refuse any participant. Visit the organization's website for the most recent information.

Sprint Triathlon
Olympic Triathlon
Duathlon

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