Lost Lake is a hidden alpine gem tucked away in Grand County, Colorado, offering a rewarding backcountry experience for hikers and anglers willing to make the trek. Rated a perfect 5.0 by visitors, this crystal-clear mountain lake sits surrounded by wildflowers and rugged terrain that few crowds ever reach. If you want a peaceful day on the water or a scenic hike without fighting for elbow room, Lost Lake delivers.
The hike to Lost Lake involves some steady elevation gain with rolling hills, but most visitors describe it as moderate and well worth the effort. The trail passes through an area that experienced a wildfire several years ago, and while the burn scars are still visible, the landscape has rebounded with vibrant wildflower blooms and lush grasses that add unexpected color to the route. Spring and summer bring the best wildflower displays, making June through August the prime window for a visit.
Fishing is a major draw at Lost Lake, with brook trout populating the clear waters. Anglers report good catch rates, and the lack of crowds means you can often find a quiet spot along the shoreline to cast without competition. Fly fishing works well here given the lake's size and clarity, though conventional tackle produces results too.
The shoreline is rocky and can be tricky to navigate on foot, so sturdy hiking boots are a must if you plan to walk the perimeter. Wildlife is active in the area, and visitors have noted that curious animals may investigate unattended food, so keep your lunch secured. The remoteness of Lost Lake means you should pack everything you need, including water, snacks, and layers for changing mountain weather.
Access to the trailhead can be an adventure in itself. Some visitors reach the area via UTV or off-road vehicle from nearby rental outfitters like On The Trail Rentals, adding a fun four-wheeling component to the trip. The road to the trailhead is rough, so high-clearance vehicles are recommended if you are driving yourself. There are no developed facilities at the lake, so plan accordingly for a self-supported outing in one of Grand County's most scenic and secluded settings.