Crown Rock Trailhead
COVID-19 Alerts
Always a bring a face covering when you leave home and maintain 6 feet of distance
- You will need a face covering to visit Boulder’s open space trails and parks. Always bring one with you when you leave home.
- Place it over your nose and mouth when you can’t maintain 6 feet of distance from others.
- Wear it around your neck or wrist when no one else is around.
- Parents should help children older than 2 years old properly wear a face covering.
- Help protect vulnerable community members and each other.
Don’t forget: Keep the space in open space! Always stay at least 6 feet from others you don’t live with or haven’t agreed to have close contact with.
Please follow these other responsible recreation reminders:
- 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.
- Plan ahead and consider recreating closer to home as parking is extremely limited - especially on Flagstaff Mountain.
- Remember: Leave No Trace! Pick up trash and dog waste. Stay on trail and walk through mud. Step off if you need to maintain distance but quickly step back on trail.
- For more responsible recreation reminders, please visit the Covid-19 Recovery page.
LOCATION
Located approximately 2.1 miles up Flagstaff Road. Please note: the vehicle length limit for Flagstaff Road is 30 feet.
Please check for Trail & Area Closures.
Or view the interactive trail map (includes trail closures) and the interactive wildlife closures map.
You are responsible for knowing and complying with all closures and OSMP rules & regulations.
PARKING
Parking lot at the trailhead, with parking fee. Information on parking permits & fees.
TRAILHEAD SAFETY
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.
TRAILS
View Crown Rock Area Trail Map 
Crown Rock Trail provides access to popular bouldering spots and eventually extends down into Gregory Canyon.
RESTROOMS
Facilities available.
PICNIC FACILITIES
Picnic facilities are available directly off of trail.
BIKE REGULATIONS
Bicycles are not allowed on this trail. Bicycles may be ridden only on those trails that are posted with the international bicycle symbol.
DOG REGULATIONS
Crown Rock Area Dog Regulations Map
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. On most OSMP trails in this area, dogs must be on a hand-held leash at all times unless they meet the voice and sight control standard and display a City of Boulder Voice and Sight tag. Dog excrement removal is required by law.
HORSE REGULATIONS
Allowed on most trails. Off-trail riding is discouraged to protect rare plants and wildlife habitat. Learn more about riding your horse on OSMP.
WILDLIFE
Black bears and mountain lions inhabit this area. Many other wildlife species are common including birds of prey, mule deer and coyotes. White-tailed and mule deer are common. Red-tailed hawks, foxes and coyotes are sometimes seen.