Rocky Mountain National Park · Easy · Out and back

Mills Lake from Glacier Gorge

Past Alberta Falls into Glacier Gorge, to a lake that looks up to Longs Peak and the Keyboard of the Winds.

Distance
5.6 mi (9.0 km)
Ascent
787 ft (240 m)
Time
About 3 h
High point
9,997 ft (3,047 m)
Grade
Easy

Line © OpenStreetMap contributors (ODbL), checked by Global Adventurer.

0 mi2 mi4 mi9,990 ft9,190 ft
Move along the height chart to see each point on the map.
Mills Lake from Glacier Gorge
Айрат Хайруллин · CC BY 3.0 · Wikimedia Commons

The hike

The walk starts at the Glacier Gorge Trailhead on Bear Lake Road, which has a small parking lot and a stop on the Bear Lake shuttle. The trail passes Alberta Falls, carries on past the junction with the North Longs Peak Trail, and at the Loch Vale junction bears left into Glacier Gorge. It climbs on to Mills Lake, named after Enos Mills, the naturalist who campaigned for the national park. From the shore you look up the gorge to Longs Peak, the Keyboard of the Winds and Pagoda Mountain. Return the same way.

It is 5.6 miles (9.0 km) round trip with 790 feet (240 m) of climbing; allow about 3 hours. The grade is Easy: a steady climb on a good trail, though the altitude makes it feel harder.

Mills Lake is at about 9,940 feet, so go slowly if you have just come up from low ground. Summer thunderstorms are common: head back if storms are building. Outside summer, expect snow or ice on the trail. From May 22 to October 18, 2026, a Timed Entry+ Bear Lake Road reservation is needed to drive Bear Lake Road between 5 a.m. and 6 p.m.

The Glacier Gorge lot is small and fills early; over the same dates, the Bear Lake shuttle stops at the trailhead.

Route drawn by Global Adventurer along OpenStreetMap paths (© OpenStreetMap contributors, ODbL), with figures worked out from it. Check the forecast and the ground on the day: paths change.

Good to know

  • Past Alberta Falls into Glacier Gorge, with Longs Peak at the head of the valley
  • The lake is named after Enos Mills, who campaigned for the national park
  • Bear Lake Road needs a Timed Entry+ reservation in summer; park shuttles stop here

Getting there

Start: Glacier Gorge Trailhead · Free parking. 40.31085, -105.63995

Directions to the start

Places to stay nearby

Rooms in and around Rocky Mountain National Park: Booking.com → Expedia →

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Paths change, and the weather decides the day. The line and figures come from OpenStreetMap and our own checks; take a map, check the forecast, and turn back if it isn't right.