June 27, 2026 O’Fallon Park Cooperative Trail Build — Start time at the YMCA O’Fallon Park Rec Complex parking lot is 8:45 am.

The OTA will be teaming up with other organizations such as the Sierra Club, Open Space STL and the City of St. Louis Forestry Division to work on additional new trails in O’Fallon Park just behind the YMCA O’Fallon Park Rec Complex.

The OTA will supply all tools and volunteer safety equipment and tools.  We’ll also have cold drinks and snacks available for volunteers.

Volunteers should wear long pants, shirts and sturdy hiking shoes/boots.  Bring at least 2 liters of water.