John Bryan State Park

John Bryan State Park is a state park in Greene County, Ohio, spanning 752 acres (305 hectares) where the Little Miami Scenic River flows through a limestone gorge. The landscape features deep valleys, steep cliffs, and over 10 miles (16 kilometers) of trails for hiking and mountain biking.

The area became a state park in 1949 through local conservation efforts aimed at protecting the limestone formations and river corridor. This designation helped preserve the geological features that make the gorge distinctive.

The park draws people interested in geology and nature, with trails passing through areas where you can see different rock layers and local plants. Many visitors come to experience how the river has shaped the landscape over time.

The park's trails range from easy walks to more challenging routes suitable for different abilities. Visitors should wear comfortable shoes and bring water, especially if planning to explore the rock climbing and rappelling areas.

The exposed limestone bedrock contains multiple layers of sedimentary rock that are millions of years old. These visible rock formations tell the story of how the region looked and changed across geological time.

Location: Greene County

Inception: 1949

Operator: Ohio State Parks & Watercraft

Address: State Route 370

Opening Hours: The park is open one half hour before sunrise to one half hour after sunset.

Website: http://parks.ohiodnr.gov/johnbryan

GPS coordinates: 39.79110,-83.84800

Latest update: December 8, 2025 19:51