Chapman Drive Trailhead
Boulder Star area on Flagstaff Mountain is closed
The Boulder Star area on Flagstaff Mountain IS CLOSED to prevent gatherings amid the COVID-19 pandemic and because of ecological and safety concerns in the area. Visitors entering the Boulder Star closure area on Flagstaff Mountain can face up to a $1,000 fine or 90 days in jail. Learn more. Follow these other important recreation guidelines:
- Stay home if you are sick or exhibiting COVID-19 symptoms.
- Only recreate with members of your own household.
- Always bring a face covering. Wear it when you can’t maintain 6 feet of physical distance.
- Keep the space in open space! Always stay at least 6 feet from non-household visitors.
- Visit OSMPTrails.org to see current trail closures, historical data that shows areas of high and low open space use and trails that are wider than 6 feet. See when trails are busiest through our Visitation Data Explorer.
- Protect first responders. Know your limits and don’t take unnecessary risks.
About 4 miles up Boulder Canyon at 38471 Boulder Canyon Drive.
Please check for Trail & Area Closures.
You are responsible for knowing and complying with all closures and OSMP rules & regulations.
The trailhead parking lot is located about 4 miles up Boulder Canyon on the east side of the road, across from the Wedgewood on Boulder Creek. The lot is unpaved and has parking spaces for 11 vehicles.
Please keep your car doors locked and your car windows rolled up at all times while leaving your vehicle parked at OSMP trailheads. Also consider leaving important valuables at home or take them with you while visiting open space. To report suspicious activity please call City of Boulder Dispatch 303-441-3333 or Boulder County Dispatch 303-441-4444. For crimes in progress, call 911 immediately.
Chapman Drive is 2.6 miles long from the trailhead in Boulder Canyon to Realization Point. The trail averages a seven percent grade. About 1.5 miles before Realization Point, visitors can access the Tenderfoot Trail. From Realization Point, there is access to other Flagstaff Summit Trails.
Common wildflowers include wallflower, larkspur and penstemon.
Bicycles are allowed on Chapman Drive Trail. Other bike trails on OSMP.
Learn about bringing your dog to OSMP. All dogs must be leashed in the Trailhead Leash Area. Beyond the trailhead, dog control requirements vary from trail to trail, so carefully watch for dog regulation signs at trailheads and trail intersections. Chapman Drive Trail is leash-required up to its intersection with Tenderfoot Trail, between that intersection and Realization Point, voice and sight control is allowed. Dog excrement removal is required by law.
Allowed on most trails. Off-trail riding is discouraged to protect rare plants and wildlife habitat. Learn more about riding your horse on OSMP.
Mountain lions inhabit this area. Coyotes, foxes, mule deer and raptors are commonly sighted.
Chapman Drive was built by the Civilian Conservation Corps (CCC) in 1935 as a way to link Flagstaff Road with Boulder Canyon. There are a number of interesting historic rock walls and structures along the way, including a switchback and cattle guard, both of which were rehabilitated in 2012 with Colorado Lottery funds. Chapman Drive is included in the Boulder County Flagstaff Mountain Cultural Landscape District.