First Fork

Managing agency

Rio Grande NF — Conejos Peak RD

First Fork is a 19.0-mile out-and-back trail located in Colorado near Colorado within Rio Grande National Forest, managed by the Conejos Peak Ranger District. The trail features 1,257 feet of elevation gain spread across the full distance, making it a moderate to challenging day hike or backpacking option. As an out-and-back route, hikers will travel to a turnaround point and retrace their steps, allowing for flexible trip lengths depending on time and energy. The trail's elevation profile and mileage suggest sustained climbing, particularly beneficial for those seeking cardiovascular challenge in a mountain environment. First Fork provides access to Rio Grande National Forest's terrain in the Conejos Peak area, offering solitude and natural forest scenery typical of southern Colorado's high country. The trail is managed by the US Forest Service to maintain sustainable recreation standards. Hikers should prepare for a full-day commitment given the distance and elevation gain. Weather conditions in Colorado's mountains can change rapidly, particularly at higher elevations, so proper preparation and gear are recommended before heading out.