Join us for the final race on Thursday, September 17th. The race starts at the 27th Street Trailhead and follows a 5K course beginning at 6:15 PM.
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 (opens in new tab)

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.