Mills Lake

Mills Lake is one of the crown jewels of Rocky Mountain National Park, a pristine alpine lake nestled in Glacier Gorge beneath the towering east face of Longs Peak. Situated in Larimer County near the town of Estes Park, this high-elevation destination draws hikers year-round with its postcard-perfect scenery and accessible trail system. Reviewers consistently rate it among the best lakes in the park, praising the dramatic mountain backdrop that includes Longs Peak at 14,259 feet, Pagoda Mountain, and Chiefs Head Peak. Whether you visit in the lush green of summer or the frozen stillness of winter, Mills Lake delivers views that stay with you long after the hike is over.

The hike to Mills Lake covers roughly five to six miles round trip and is rated as a moderate trail. You can access the route from either the Glacier Gorge trailhead or the Bear Lake trailhead, both of which are served by the park shuttle system. Along the way, hikers pass Alberta Falls and Glacier Falls, two scenic stops that add variety to the trek. The trail surface is well-maintained for most of the route, though it becomes rockier as you approach the lake. Reviewers recommend sturdy hiking shoes with good traction, and during late fall and winter months, micro-spikes, trekking poles, and even snowshoes are strongly encouraged for navigating snow-covered and icy sections of the trail.

Fishing at Mills Lake rewards anglers with rainbow trout in a stunning mountain setting. The lake itself offers flat rocks along its shoreline where visitors can sit, rest, and take photographs of the surrounding peaks. Wildlife sightings are common along the trail, with hikers reporting encounters with elk and chipmunks. The area is notably less crowded than nearby trails such as the Nymph, Dream, and Emerald Lake chain, making it a solid choice for visitors seeking a quieter experience in the park.

Seasonal considerations matter at Mills Lake. May and July receive high marks from reviewers as ideal hiking months, offering comfortable temperatures and manageable trail conditions. Early November brings frozen landscapes and the possibility of walking on the ice-covered lake. Spring and late fall require extra gear preparation due to snow and ice on the trail. Regardless of when you visit, arriving early in the morning between six and seven is strongly recommended by experienced hikers to secure parking and beat the crowds. For those wanting a longer adventure, the trail continues past Mills Lake to Jewel Lake and ultimately to Black Lake, adding mileage and elevation for a full-day outing in one of Colorado's most spectacular alpine gorges.