Cub Lake

Cub Lake sits in the heart of Rocky Mountain National Park, tucked along the western edge of Moraine Park in Larimer County. If you have been searching for a Colorado hike that mixes easy terrain with genuine wildlife encounters, this is one of the best options on the east side of RMNP. The 2.3-mile trail gains only 540 feet of elevation, yet it delivers views of broad mountain meadows, aspen groves, and a shallow lake blanketed in yellow pond lilies every summer.

The Cub Lake Trail starts at the Cub Lake Trailhead, located 1.3 miles down Fern Lake Road near the west end of Moraine Park. Parking is limited, so arriving early or riding the free Moraine Park Shuttle during summer is a smart move. From the trailhead you cross the Big Thompson River on a sturdy footbridge, then follow a wide, well-graded dirt path through open meadows where elk and mule deer regularly graze at dawn and dusk. Moose sightings are common near the marshy areas closer to the lake, and visitors frequently spot bull moose, cows, and calves wading among the lily pads.

Cub Lake itself is a shallow, marshy body of water rimmed by granite boulders and partially burned forest from the 2012 Fern Lake Fire. The recovering burn zone adds a dramatic backdrop and has opened the canopy, creating prime habitat for woodpeckers, bluebirds, and other cavity-nesting species. Bird watchers will find this stretch especially rewarding. The lily pad coverage peaks in July and August, giving the lake its signature look that draws photographers from across Colorado.

For hikers who want more mileage, the Cub Lake Loop extends the trip to roughly 6.1 miles by connecting with the Pool and Fern Lake trails, creating a moderate loop with about 744 feet of total elevation gain. The loop passes through denser forest and crosses several small streams, making it a solid half-day outing. Fishing is permitted with a valid Colorado fishing license, though Cub Lake is not heavily stocked. Species in RMNP waters include greenback cutthroat trout, brook trout, brown trout, and rainbow trout.

Rocky Mountain National Park charges an entrance fee and requires timed-entry reservations from late May through mid-October. Pets are prohibited on all park trails. The trail is open year-round, though spring and early summer bring muddy sections, and winter visitors should expect packed snow and ice on shaded stretches. Tick activity is notable in the meadow sections from spring through early summer, so long sleeves and insect repellent are recommended.