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Views abound along this gradual out-and-back route to Mirror Lake through a less-visited corner of the Nat'l Park.

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Out and Back

11,033' 3,363 m


9,686' 2,952 m


2,078' 633 m


2,076' 633 m



Avg Grade (3°)


Max Grade (12°)

Dogs No Dogs

Features Commonly Backpacked · Fishing · Lake · River/Creek · Wildflowers · Wildlife

Nat'l Forest Corral Creek trailhead has room for around 8 cars.


From the Corral Creek trailhead, head east along Corral Creek to the junction with Cache La Poudre River and follow it briefly until the Hague Creek drainage and up along the Lower Mummy Pass Trail. Most of this area was burned in the Cameron Peak Fire of 2020, but it is showing good new growth. Because of the burn, views are better and wildflowers are abundant when the season is right. The final push up to Mirror Lake heads through thicker forest and wet areas adjacent to creeks that drain out of the lake. Moose can be numerous and active in this area (generally around the Koenig camp area).

Need to Know

Water is readily available along almost the entire route (not the climb above Hague Creek).


This northwestern section of Rocky Mountain National Park is not visited nearly as much as central areas accessed from Trail Ridge Road, but for good reason. The trailhead is less accessible and further from the more populated areas of the Front Range (Denver metro). That said, the drive along Poudre Canyon is easy and scenic, and the County Road to get to Corral Creek TH is easily managed for most 2WD cars assuming there isn't snow on the ground or any major rain events.

From the trailhead, head east along the Corral Creek Trail through Roosevelt National Forest and Comanche Peak Wilderness. The trail actually begins with a slight descent following Corral Creek with increasing signs of the Cameron Peak Fire the further you go. At around 1.5 miles, head right onto the Poudre River Trail, crossing the bridge and entering Rocky Mountain National Park (no dogs, camping permits required).

This stretch of trail is very scenic along the river with lots of opportunities for fishing or hanging a hammock by the water.

At the next intersection, head left back across the river onto the Mummy Pass Trail. This trail was mostly burned and can be faint at times but is getting worn in more. Only a few fallen trees until the closure (Summer '23) at Upper Mummy Pass Trail (junction with Mirror Lake Trail).

Along the westernmost section of Mummy Pass Trail, you'll pass the Hague Creek backcountry sites and privy (last call for privy) as the trail weaves through a mix of burned and unburned woodland following Hague Creek. Around 2.25 miles from the Corral Creek TH, the trail arrives at an open meadow and river valley with Hague Creek continuing to the east. There is a sign about fishing regulations and native Greenback Cutthroats.

The trail bends left (north) to continue through the trees, this time following the contours along the longest stretch of ascent on this entire route. The grade is never too steep and some sections have built-in steps. Because of the burn, the views of the river valley below are beautiful and continue to get better as you climb.

Finally, you'll reach the intersection with Mirror Lake Trail. As of this writing (Summer '23), the upper section of Mummy Pass Trail (continuing east) is closed and marked with orange fencing. Turn left and head north/northwest along a flatter stretch with great views and a nice break before the final kick up to the lake.

Near the Koenig campsite and turn-off for Comanche Peak, the trail enters some denser unburned forest and wet areas where moose can reside. The trail continues to climb but the end is near! There are 3 backcountry sites at Mirror Lake, which require permits and bear canisters.

The lake is beautiful, seemingly big, and has stunning views back toward the Desolation Peaks, Ypsilon Peak, Fairchild, etc. as well as the walls and rocks around it. Lots of small trout, too. After you've had your fill, head back the same way and expect up to an hour off the time it took to get here (depending on breaks/pace).

Flora & Fauna

Fireweed, woodpeckers, moose, trout, deer.


Shared By:

Zander Göpfert

Trail Ratings

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in Mummy Range


  4.0 from 1 vote
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0 Views Last Month
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A Brook Trout in spawning color.
Aug 24, 2018 near Estes Park, CO
Final stretch to Mirror Lake backcountry campsites.
Aug 21, 2023 near Estes Park, CO
Big South / Corral Creek TH / RMNP junction.
Aug 21, 2023 near Estes Park, CO
Heading back to the trailhead alongside Corrall Creek.
Aug 24, 2018 near Grand Lake, CO
Big walls above Mirror Lake.
Aug 21, 2023 near Estes Park, CO
Upper Mummy Pass Trail closure.
Aug 21, 2023 near Estes Park, CO



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