• Equestrian Parking
  • Picnic Area
  • Restroom

Trailhead Description

The Marshall Mesa Trailhead accesses Marshall Mesa and Greenbelt Plateau area trails. This area is closed when conditions are too muddy; please check the trail map for closures before visiting.


Available at the trailhead. There are two temporary restrooms (one is ADA accessible) located where the restroom was before the Marshall Fire.

Picnic Facilities

Three picnic tables available at the trailhead.


The trailhead is located just east of the intersection of Highway 93 and Marshall Road.


Parking is available with a parking fee. There are 45 standard parking spaces, 3 ADA spaces and 4 designated horse trailer spaces. Information on parking permits & fees.

Area Info

Bike Regulations

Bicycles are allowed on Marshall Valley Trail, Coal Seam Trail, Cowdrey Draw Trail, Greenbelt Plateau Trail, and Community Ditch Trail. Bicycles may be ridden only on those trails that are posted with the international bicycle symbol.

Dog Regulations

Marshall Mesa Area Dog Regulations Map

Learn about bringing your dog to OSMP. 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. A dog station is available to aid in the collection of dog excrement.

Horse Regulations

Horses are allowed on most trails. On-trail riding is encouraged to protect rare plants and wildlife habitat. Learn more about riding your horse on OSMP.


Birds of prey are frequently sighted in this area. Coyotes and mule deer are common.

Nearby Trailheads