About This Route
Glacier Gorge Trail to Mills Lake (5.4 miles round-trip, 740 feet gain) delivers world-class fishing for greenback cutthroat trout in a glacial cirque at 9,950 feet. Start from Glacier Gorge Trailhead; pass Alberta Falls en route to this catch-and-release gem. Fly fishing shines with dry flies; brook trout also present. NPS emphasizes restoration here, so adhere to Leave No Trace: pack out all trash, avoid bank trampling.
Safety Considerations
The moderate hike amplifies fatigue at altitude; pace yourself, drink 1 liter water per hour. Afternoon lightning is deadly; turn back by 11 AM. Icy patches linger into July; trekking poles prevent falls. Bears roam; store food in bear canisters. Disinfect gear rigorously: Virkon Aquatic or bleach soak for waders, per RMNP disinfection guidelines, to safeguard cutthroat populations. Colorado license required; one rod only, barbless hooks. Watch for rockfall near waterfalls.
Essential Gear
License, 4-weight fly rod, barbless flies, waterproof hiking boots (e.g., Salomon X Ultra), bear spray, and emergency bivvy. Pack REI Kingdom Insulated Flash air mattress for streamside rests.