About This Park
Cosmo Bike Park is Columbia Parks and Recreation's multi-purpose bike facility in the northeast corner of Cosmo Park at 1910 Parkside Drive. The May 2025 dedication opened an asphalt pump track, mountain bike skills course, bike playground, and shelter beside parking funded by the voter-approved park sales tax and local trail association donations. The site also serves as the official trailhead for Rhett's Run mountain bike trail. Use is free during Cosmo Park hours; avoid riding wet dirt features after rain.