Marshall Valley Trail

Trail Meter: 

The Marshall Valley Trail is fairly flat, rolling along contour at the northern base of Marshall Mesa. Prairie grasses and wildflowers abound in the spring and early summer.  Be sure to rest and enjoy the increasingly stellar views of the Flatirons as you head east along the trail.

The trail is 4 feet wide (or wider) in most places, and along most sections you can see pretty far ahead (and other trail users can see you).  This is a great trail for kids and families.  Although a few sections of the Marshall Valley Trail are raised above the surrounding grade (a type of trail construction called a "French drain"), trail users should definitely avoid this trail during muddy times as the clay surface of the trail sucks up wheels, boots, and hooves and leaves lasting, bumpy scars on the trail surface.

Marshall Valley Trail runs from the Marshall Mesa Trailhead out to where Cowdrey Draw intersects the easternmost end of the Community Ditch Trail.  Marshally Valley Trail is one part of the amazing Dirty Bismark Loop, not to be missed in those warm dry winter days when you're jonesing for some miles.

Check out the Marshall Mesa Trails and Nature Brochure created by our friends at the City of Boulder Open Space and Mountain Parks to learn more about the flora and fauna in the area, and get your nerd on even more with the Illustrated Geology Tour of Marshall Mesa guide - wow your friends!

Marshal Valley GPX File13.87 KB
Marshal Valley Google Earth File2.04 KB
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Marshall Valley Trail Click on image to enlarge
Marshall Valley Trail Click on image to enlarge

T: 2 A: 4 C: 3

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Learn More About Trail Difficulty Ratings
1.2 mi.
140 ft.


OSMP Closure... smart move!

Trail Meter: Fair»Good

Good and tacky dirt, no mud spots

Trails reopened by OSMP. Muddy spots remain. ride through the mud and not around it!

OSMP Closure - rapid melting conditions... way too much water...

2/6 at 7:00 p.m.: Packed snow singletrack, great traction other than the hill up to Cowdrey draw, that is still pretty unconsolidated. Will likely get sloppy with this weekend's warm up, ride early when frozen.

2/2 at 7:30 a.m.: Packed snow and reasonably good traction, although hill up to Cowdrey Draw is still pretty unconsolidated and slick

1/27 at 5:00 p.m.: About four inches of snow and still coming down, but mostly good traction over frozen ground. Rock slab sections a little slippy.


Any mud holes were firming up and drying out.

Trail Meter: Fair»Good

A couple wet spots, and one snowy spot a few feel long. Good enough to upgrade from fair to good, but not "great".

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