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Black Diamond Triathlon
Saturday, June 27, 2026 · Enumclaw, United States
Distances
25.8km
Start location
About this race
The 2026 RTB series season opener. Swim in Deep Lake, bike and run courses through Ravensdale, Selleck, and Enumclaw farmlands. Finishers receive a medal; top athletes earn custom pint glasses. Nolte State Park is spectator-friendly, suitable for families. This event starts your journey to earn The Trident, a trophy for consistency across three RTB races.