Ride dirt, chase sunsets, laugh with friends.

The Wednesday Night Mountain Bike Race Series is a beloved, weekly gathering for mountain bikers of all abilities across Washington. Taking place on Wednesday evenings from April through August 2025, the series is focused on fun, inclusivity, and building community, not just competition. Each week features a fresh course in scenic settings like Riverside State Park (Nine Mile Falls) or North Seatac Park (Seattle), with routes adapting to all skill levels. With random prize drawings, post-race socials, and a casual atmosphere, this is where riders ages 5 to 75 can chase their best times or just enjoy a ride with friends under the sunset sky.

Courses change each week and typically offer 1–4 laps of energetic dirt trail riding. Riverside State Park routes include rolling singletrack with rocky and technical segments, while North Seatac Park features mixed forest trails, roots, tight corners, and various natural obstacles.

• New, unique course designs each week to keep races fresh and exciting.
• Welcoming to all riders aged 5–75, from first-timers to seasoned pros.
• Post-race drinks and prize drawings promote a fun, inclusive atmosphere.
• Strong community vibe—bring friends and enjoy the ride!