CYCLO-X Harlow Platts
Sep 13, 2025
Boulder,CO
Cyclocross
About
Conquer Boulder’s iconic cyclocross challenge amid stunning mountain vistas.
The CYCLO-X Harlow Platts race returns to Boulder, Colorado, on September 13, 2025, as part of the Shimano CYCLO-X Series’ 27th anniversary. This prestigious cyclocross event invites athletes to compete on a dynamic course designed to test skill and endurance, against the breathtaking backdrop of the Rocky Mountains. As one of the key stops in the Colorado Cross Cup, riders earn valuable series points in an event renowned for its vibrant atmosphere, technical course features, and expert event management.
COURSE DETAILS
Harlow Platts Park in Boulder, CO, hosts a multi-lap cyclocross course known for challenging surfaces and technical turns. Expect a mix of grass, dirt, barriers, short climbs, and tight turns designed to push competitors physically and technically.
Race HIGHLIGHTS
- Scenic backdrop of the Rocky Mountains
- Live chip timing for real-time results
- Part of the Colorado Cross Cup series with points competition
- Celebrating the 27th anniversary of Shimano CYCLO-X Series
- Expertly managed by Without Limits Productions
RIDE TYPES
Race overview
Typical cyclocross laps of 2–3 km (final course layout announced closer to race day).
City elevation ~5,430 ft (1,655 m); course elevation gain estimated 50–100 ft per lap.
Mixed surfaces including grass, dirt, sand, obstacles, barriers, with rolling terrain and technical features.