Boy Scout Loop, Flagstaff Mountain, Boulder - Denver - Golden - Fort Collins - Lyons, Colorado

Boy Scout Loop - 1.0 miles

Flagstaff Mountain

Ponderosa Pines line the The Boy Scout Trail

Ponderosa Pines line the The Boy Scout Trail

Round-Trip Length: 1.0 miles
Start-End Elevation: 6,940' - 6,940' (6,960' max elevation)
Elevation Change: + 20' net elevation gain (+215' total roundtrip elevation gain)
Skill Level: Easy
Dogs Allowed: Yes
Bikes Allowed: No
Horses Allowed: No
Related Trails:

Boy Scout Loop - 1.0 Miles Round-Trip

The Boyscout Loop Trail circle's the north flank of Flagstaff Mountain's 6,978' summit. Visitors will enjoy light crowds, 4-season utility, excellent views, and access to the Sensory Trail - a short interpretive walk atop the Flagstaff Mountain summit.

The following description travels clockwise from the Sensory Trailhead on Flagstaff Mountain. Note the trail ends about .25 miles away across the parking lot (the loop is completed in the parking lot itself):

The Boyscout Trail drops moderately through columns of pine, juniper, and fir to a spur for May's Point (.33 miles m: 6,856'), a worthwhile excursion to panoramas across the front range and Continental Divide.

The Boy Scout Trail gradually bends east with terrific views of Boulder, notably The University of Colorado's red roof buildings and football stadium.

The trail ends in the parking lot east of where you began; turn right to return to the Sensory Trailhead and parking area.

Consider continuing on the Sensory Trail, an interpretive walk ideal for children. The Sensory Trail is handicap accessible.

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Worth Noting

  • Bikes are not permitted on the Boyscout Loop Trail.

  • Parking is limited at the trailhead itself, but there's ample parking at the nearby nature center.

  • Dogs must be under voice and sight control.

  • Mountain lion and bear inhabit this area. Remain vigilant, especially at dawn and dusk.

Directions to Trailhead

The trailhead is located on the summit of Flagstaff Mountain, approximately 3.2 miles beyond the end of Baseline Road.

From Boulder, take Basline Road west until you pass the official entrance to Boulder Parks and Open Space. The road now becomes Flagstaff Road. Exercise caution as you drive the 3 miles up Flagstaff Road along steep, hairpin turns to the Inspiration Point Trailhead Parking Area on the right.

Bear right at this trailhead onto Flagstaff Summit Road and continue through the winter gate to the summit parking area. Follow signs to the Sensory Trailhead, located on the west side of the summit parking complex.

Contact Information

City of Boulder Open Space and Mountain Parks
Phone: 303-441-3440

Trip Reports

There are no trip reports on this trail.


"Updated road closure info: road closure to begin Monday, June 16"
OSMP Hiker  -  Boulder  -  Date Posted: June 1, 2014
"Be aware Flagstaff Road will have daily closures from June 1 until November for flood damage repair. All trails will remain open, however, access via flagstaff rd wont be possible. "
OSMP Hiker  -  Boulder, CO  -  Date Posted: May 29, 2014


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