Lost Lakes

Managing agency

Pike-San Isabel NF — South Platte RD

Lost Lakes Trail is a 19.6-mile out-and-back route in Colorado's Pike-San Isabel National Forest, managed by the South Platte Ranger District. This extended backcountry trek offers substantial distance for experienced hikers seeking remote alpine scenery and solitude. The trail's length makes it suitable for a full day hike or backpacking trip, with turnaround flexibility allowing hikers to adjust distance based on time and energy. The out-and-back format provides straightforward navigation, eliminating route-finding concerns on the return journey. Located within the Pike-San Isabel National Forest system, hikers will experience the high country terrain characteristic of the Front Range and South Park region. The trail's remote nature and significant mileage make it ideal for those with solid backcountry experience and proper preparation. Before heading out, contact the South Platte Ranger District for current trail conditions and any access updates. Bring adequate water, weather-appropriate gear, and allow sufficient daylight hours for the full distance. The trail's length demands early starts and careful time management to ensure safe return before dark.