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blue Sunshine Lion's Lair Loop

  4.5 ( 96 ) Favorite

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Trail

5.3 mile 8.5 kilometer loop
Singletrack
Intermediate

Elevation

Ascent: 1,261' 384 m
Descent: -1,282' -391 m
High: 6,800' 2,073 m
Low: 5,530' 1,686 m

Grade

Avg Grade: 9% (5°)
Max Grade: 33% (19°)

Dogs

No Dogs
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Map Key

Great Mount Sanitas views are the reward for this gentler loop in Sunshine Canyon.

Megan W

Features Views · Wildflowers · Wildlife

Some parts of this loop are closed to dogs.

Overview

This enjoyable loop sees less traffic than the main attraction in this area, the Mount Sanitas Loop. The other advantages of this loop include a less arduous ascent on a shiny new trail and a quick, efficient descent.

Description

This loop combines several area trails into a varied, pleasant hike. Starting from the Centennial Trailhead at the mouth of Sunshine Canyon near the toilets, head south very briefly, up the road-width trail, to find the start of the Red Rocks Trail. Almost immediately, you'll leave the Red Rocks Trail and follow the Sunshine Canyon Trail as it branches off to the west and crosses a small ravine. Follow the nicely bench-cut trail, contouring Sunshine Canyon Trail as it parallels Sunshine Canyon Road. This section of low angle trail is not steep and has a mostly smooth surface, passing through fields and fir forest.

The Sunshine Canyon Trail ends at a residential driveway, adjacent to Sunshine Canyon Road. To access the next part of the loop, follow the signage and carefully cross the road (there's a crosswalk). Turn left and head briefly up the road until you reach the first dirt residential road on the right (east) side of the road. From the intersection you can see stairs indicating the start of the Lion's Lair Trail.

The Lion's Lair trail starts up a small ridgeline sparsely treed with fir. After about 1/2 mile you'll pass the Lion's Lair Spur trail, which would take you to Sunshine Canyon and a few parking spaces. Continue on Lion's Lair.

Switchback and contour up the western flank of Mount Sanitas, climbing gently past dry rocky outcrops. There are views of the Continental Divide, and down into Sunshine Canyon. The grade is never steep, and the surface is smooth. As you ascend, you enter a pine forest, and the views get better and better. Be sure to turn around and enjoy the high peaks in the distance. At the end of the trail, you merge onto the main Mount Sanitas trail for the last few feet of rocky stair-like climbing to the summit. At the summit, all of Boulder is laid out in front of you.

Take a breather before descending the Mount Sanitas Trail. This is a steep, challenging descent down the spine and western edge of Mount Sanitas. Pass over rocky sections and numerous large step-downs. Expect a lot of hiker, runner, and dog traffic on this section of trail. There are several rest spots where you can pull off to enjoy views of town and also the snowy peaks to the west. There are a few rutted steep sections with difficult footing. Towards the bottom, you'll pass some short bouldering cliffs popular with rock climbers. After one last series of tall wooden log steps, you'll cross an irrigation ditch and emerge into a small meadow. Keep to your right, crossing a stream and passing through a covered picnic pavilion. Signs will guide you. Carefully cross Sunshine Canyon Road and head uphill to arrive back at the Centennial Trailhead parking area.

Flora & Fauna

A suprisingly wonderful variety of wildflowers in the sunny spots- especially in the early spring months (April & May).

Contacts

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Check-Ins

Jun 9, 2019
Sarah Butterworth
5.3mi
Jun 8, 2019
Laura Hamman
May 29, 2019
Dave Munger
I did the loop as a trail run in reverse. The climb is steep and not runnable (for me), with gorgeous views. The descent is a smooth cruiser! 5.1mi — 1h 10m
May 25, 2019
Kate Hollenbaugh
Intense trail!!! Intense up and super intense and rocky descent! 5.3mi — 5h 24m
May 17, 2019
Albus Dumbledore
Beautiful weather dry trails
May 16, 2019
Tracie Akerhielm
Apr 27, 2019
Nick Barendregt
Very nice hike! Give you a good taste of the variety of Boulder's geography. My new favorite way to hike Sanitas. 5.3mi — 1h 57m
Apr 27, 2019
Stephanie LaMania
10h 30m

Trail Ratings

  4.5 from 96 votes

#14

Overall
  4.5 from 96 votes
5 Star
61%
4 Star
28%
3 Star
10%
2 Star
0%
1 Star
0%
Rankings

#6

in Colorado

#14

Overall
1,027 Views Last Month
31,333 Since Apr 23, 2015
Intermediate Intermediate

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