Greenbelt Plateau Trailhead
Always bring a face covering when leaving your home. Anyone over 12 years old is required to wear face coverings anytime they cannot maintain six feet of distance at OSMP trailheads and when passing others on trails. If visitors are at least 6 feet away from others, they do not need to wear a face covering over their nose and mouth. However, if visitors reach 6 feet distance to someone else on the trail, they should put the covering back over their nose and mouth. Learn more.
Limited parking on Flagstaff Mountain. Flagstaff Mountain continues to be busy on the weekends. Parking is extremely limited. For your safety & the safety of others, do not park along the side of the road. Illegally parked vehicles can be ticketed and towed. Consider visiting different locations. Plan your visits through OSMPTrails.org or download the Boulder AreaTrails App.
Siempre traigan un cobertor facial cuando salgan de su hogar. Cualquier persona mayor de 12 años requiere usar un cobertor facial cuando no pueda mantener una distancia de 6 pies (2m), ya sea en las entradas de los parques o cuando pasen a otros en el sendero. Si los visitantes están a más de 6 pies (2m) de otros, no necesitan usarlo para cubrirse la nariz y la boca. Sin embargo, si los visitantes se acercan a 6 pies (2m) o menos de distancia de alguien en el sendero, deben cubrirse la nariz y la boca.
Stay on trail and walk through mud. If needed, step off to maintain distance. Please avoid stepping on vegetation. If possible, step onto a rock or a bare spot to let others pass, then step back on the trail. Politely announce yourself if you need to pass others. Traveling off trail, whether hiking, running or biking, can permanently damage vegetation and widen trails. Learn more.
0.1 mile east of the intersection of Highway 128 and Highway 93 on the north side.
Please check for Trail & Area Closures.
You are responsible for knowing and complying with all closures and OSMP rules & regulations.
Parking lot on north side of Highway 128 with a parking fee. Information on parking permits & fees.
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.
Greenbelt Plateau Trail (1.5 mile) heads north from the trailhead through grassland and ponderosa pine savannah. It affords beautiful views of the Boulder Valley as it meanders toward the Community Ditch Trail.
Community Ditch Trail (1.7 mile west of Hwy 93 and 1.9 mile east of Hwy 93) can be taken to the east through the Marshall Mesa area or to the west toward Doudy Draw. This trail is very popular with bicyclists and equestrians.
An RTD bus passes very close to this trailhead. Learn about Taking the Bus to OSMP.
This area is identified as being popular with people using wheelchairs. See the Accessible Trails Page for details.
No facilities available.
No picnic facilities.
Bicycles are allowed on most trails in the area. Bicycles may be ridden only on those trails that are posted with the international bicycle symbol. Other bike trails on OSMP.
Learn about bringing your dog to OSMP. All dogs must be leashed in the Trailhead Leash Area. Dogs are prohibited east of the Greenbelt Plateau Trail. Dogs must be on a hand-held leash on the High Plains Trail. Dog control requirements vary from trail to trail, so carefully watch for dog regulation signs at trailheads and trail intersections. On most other 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.
Allowed on most trails. Off-trail riding is discouraged to protect rare plants and wildlife habitat. Learn more about riding your horse on OSMP.
There is an abundance of raptors, mule deer and coyotes. The surrounding land is designated as a grassland management area to protect grassland plant and animal communities. Many birds, such as killdeers, meadowlarks and vesper sparrows, nest on the ground here during spring and summer.
- Coal mining area in the 1860s. Mines after 1900.