Ten Trails Active Club 5K Summer Series

JUN-SEP
17-9
2026
Enjoy a free seven race summer series featuring a 5k trail course in Black Diamond. Run or walk bi weekly races to build community and compete for season end prizes in a supportive environment.
17-9 Jun-Sep 2026

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Event Overview

The Ten Trails Active Club 5k Summer Series is a community-focused running and walking event held in Black Diamond, Washington. This series consists of seven bi-weekly races occurring every other Wednesday throughout the summer months. Participants can choose to run or walk the designated 5 km course.

Course Information

The event takes place on an open course that utilizes the trail system within the Ten Trails community. The route features a winding layout. Each race in the series is hand-timed by the organizers. Results for each event are typically published online within a few days following the completion of the race.

Series Participation and Format

Participants are required to register once to be eligible for all seven races in the series. Upon initial check-in, runners and walkers are assigned a permanent race number for the entire season. Registration for the series is free of charge. The event occurs on the following dates:

  • 5 km (Seven race series)

To be eligible for season-end prizes and awards, participants must compete in at least four of the seven scheduled races. Categories for recognition include speed-based awards for the fastest runners and walkers, as well as spirit awards for sprint segments and community support.

Amenities and Logistics

Post-race snacks and water are provided to participants. The organizers encourage the use of personal water bottles to reduce the consumption of plastic cups. Check-in and gatherings take place at Civic Park. On weeks when no official race is scheduled, the club hosts informal group runs from the same location. Visit the organization's website for the most recent information.

5 km