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blue Sleepy Lion Trail

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2.0 mile 3.2 kilometer point to point


Ascent: 553' 169 m
Descent: -435' -132 m
High: 6,644' 2,025 m
Low: 6,115' 1,864 m


Avg Grade: 9% (5°)
Max Grade: 23% (13°)


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Trail shared by David Kider

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Current trail conditions

All Clear 99 days ago See History
Mostly Dry - Hiked 1/10/19 Some icy patches but spikes are not required. Trail is clear and mostly dry. Some patches of mud as well.

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A shaded, quiet variation through the forest.

David Kider

Features River/Creek

Dogs can be off leash if under voice and sight control.


Turn left off the dirt road to start the Sleepy Lion Trail. A sign will indicate where it begins.

The trail immediately starts climbing through pines. This area is called Deadman Gulch. Continue until reaching a really nice meadow, where you'll have views of RMNP. From there, keep on the trail as it continues gaining elevation. The trail will get a little bit rockier and then begin descending. You'll then see a sign for the Hall Ranch Open Space.

Instead, continue to the right to stay on the trail. You'll soon see the reservoir to your right in the distance. Stay on the trail as it ascends some more and then begins descending. This section of the trail has some pavement on it. Soon you'll reach the base of the Ralph Price Reservoir and Button Rock Dam. A huge amount of water was being released from the dam when we were there and was spraying into the river. You can get up very close to the spray.

Head back the way you came or head northeast on the Button Rock Dam Access and Longmont Dam Road for a nice loop.


Land Manager: City of Longmont

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Jan 13, 2019
Matt Stone
Jan 10, 2019
Haley Fischman
Nov 24, 2018
Jessica Lopez
Aug 19, 2018
Ally Charlton
Hike with Alvina. From where road is blocked (3/4mile before trailhead), looping back, with quick detour up to the top of the dam. Distance v. Approx 5mi
Aug 18, 2018
Chris Gummer
Aug 12, 2018
Heather Mendenhall
Good elevation gain from the start. Pretty overlooks but not very shady through most of the hike. Be sure to wear sun protection. 4mi
Jul 1, 2018
April Harvey
loved the off leash trail! Marley loved it even more! We did the sleepy lion and came down to complete the loop.
Jun 23, 2018
Danielle Rourke
sleepy lion to professors ranch trail to Button Rock dam to Button Rock access toad and back 5.6mi

Trail Ratings

  4.1 from 9 votes


  4.1 from 9 votes
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in Colorado


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