Join us for the 2026 Trail Race Series on June 4 and September 17! All races start at the 27th Street Trailhead and are 5K courses beginning at 6:15 PM.

You can register for the entire series or choose any combination of individual races. Each race date is capped at 75 runners, so don’t wait to sign up.

Pricing:

• Individual races are $35 ($41.03 with fees) each.
• Refunds are NOT available!
• TFNU members receive $5 off a series pass or individual race with the code Member2026 at checkout.

 

Click Here to Register 

 

The Story of the O-Sho Trail Series

This 5K welcomes everyone - beginners discovering dirt for the first time and experienced runners who call the mountains home. Show up for the miles. Stay for the mission. Support the trails that support us.

Whether you’re new to trail running or a singletrack regular, this 5K brings our community together to move, connect, and give back. Run, hike, or cruise the course — all proceeds go directly toward building and maintaining local trails.