O'Fallon Park was once the site of the O'Fallon family homestead, later donated to the City of Denver in 1938.
The park acts as a wildlife corridor for large mammals, including elk and mule deer, which frequently traverse the Bear Creek valley.
It is part of the larger Denver Mountain Parks system, a unique collection of non-contiguous parks located outside the city limits.
The trails are specifically engineered to accommodate technical mountain biking, often featuring significant root exposure and rock gardens.
Bear Creek is regularly stocked with trout, making it a popular spot for fly-fishing enthusiasts despite its narrow, forested banks.
O'Fallon Park is a 860-acre mountain park managed by the City and County of Denver, situated along Bear Creek in the foothills of the Rockies. The park offers 4.5 miles of trails primarily utilized for mountain biking, hiking, and equestrian use. Bear Creek runs through the property, providing a designated area for fishing. The terrain is defined by rugged slopes, ponderosa pine forests, and dramatic rock outcrops. The park serves as a hub for the regional trail system, connecting to the Denver Mountain Parks network. It is known for its diverse topography that challenges mountain bikers with steep elevation changes and technical trail sections.
The bridge crossing Bear Creek provides the most scenic view of the water and the surrounding pine-covered valley walls.
Mountain bikers should yield to hikers and horses, as the trails are multi-use and can become narrow in sections.
Cell phone service is inconsistent throughout the canyon; download offline maps before arriving.
Wear sturdy, closed-toe footwear, as the terrain is rocky and uneven.
Attempting the technical mountain bike trails without prior experience, as they are rated moderate to difficult.
The park is generally open year-round, though high-altitude trails may be inaccessible or muddy during spring snowmelt.
Pack out all trash to adhere to Leave No Trace principles; maintain control of dogs at all times.
