Old Dillon Reservoir

Managing agency

Forest Service

Old Dillon Reservoir is a 2.1-mile out-and-back trail located in Colorado near Dillon, managed by Pike-San Isabel National Forest's South Park Ranger District. The trail provides access to the historic reservoir area, offering hikers a moderate excursion through national forest terrain. This out-and-back route allows visitors to explore the Old Dillon Reservoir area and return via the same path. The trail's relatively short distance makes it accessible for a range of hiking abilities, though specific elevation gain information is not available. The surrounding Pike-San Isabel National Forest landscape offers scenic mountain views typical of Colorado's high country. The South Park Ranger District actively manages this trail to maintain access and safety. Old Dillon Reservoir represents an important piece of Colorado's water and recreational history, with the trail providing insight into the region's infrastructure and natural environment. Hikers should come prepared with standard mountain essentials and check current trail conditions before visiting, as weather and seasonal changes can affect hiking conditions in this Colorado location.