Main Fork

Managing agency

Arapaho-Roosevelt NF — Clear Creek RD

Main Fork is a 12.2-mile loop trail located in Colorado near the Clear Creek Ranger District of Arapaho-Roosevelt National Forest. The route gains 1,615 feet of elevation over its course, making it a moderately challenging day hike suitable for hikers with some experience managing sustained climbs. The trail is maintained by the US Forest Service through the Arapaho-Roosevelt National Forest's Clear Creek Ranger District. As a loop configuration, the trail returns to its starting point, eliminating the need for shuttle arrangements. The elevation gain of 1,615 feet is distributed across the 12.2-mile distance, averaging roughly 133 feet per mile. This moderate gradient makes the hike accessible to those seeking a longer day outing without extreme vertical demands. The Clear Creek Ranger District encompasses diverse terrain and forest types typical of Colorado's Front Range foothills, though specific features along Main Fork should be confirmed with the managing agency for current conditions, seasonal access, and any trail maintenance updates.