ElevationAscent: 941' 287 m
Descent: -939' -286 m
High: 5,953' 1,814 m
Low: 5,523' 1,683 m
GradeAvg Grade: 2% (1°)
Max Grade: 16% (9°)
Popular rides nearby
Spring Brook Loop
12.6 mi 20.3 km • Loop • 942 ft Ascent 287.16 m Ascent
Valmont Bike Park - Singletrack Hotlap
2.0 mi 3.2 km • Loop • 78 ft Ascent 23.73 m Ascent
Chapman Drive Out-And-Back
11.4 mi 18.4 km • Out and Back • 1,343 ft Ascent 409.29 m Ascent
16.2 mi 26.1 km • Loop • 1,804 ft Ascent 549.87 m Ascent
7.4 mi 11.9 km • Loop • 829 ft Ascent 252.78 m Ascent
North Boulder Loop
8.3 mi 13.4 km • Loop • 372 ft Ascent 113.47 m Ascent
“A fun Boulder area cruise following the famous Morgul Bismarck road course.”— Michael Ahnemann
Electric Mountain Bikes Not Allowed
The trails are easily accessible from Boulder, Superior, and neighboring towns, and it's mostly smooth with just a few slightly technical spots. It's just challenging enough to keep advanced riders interested, but rideable by just about everyone. This makes it a popular route, and it's often rideable almost all year.
Need to Know
The trail soon crosses a bridge and meets up with Cowdrey Draw and Community Ditch trails. Take a left onto Cowdrey Draw and you'll head mostly downhill on singletrack, popping out at 66th Street.
Continue through the gate and across the road and you'll now be on the Mayhoffer-Singletree extension trail, heading towards Superior. This section twists back and forth on itself and climbs just a bit. It's a serene, rural part of the ride - you're likely to see horses or cows along the way, and it feels like you're farther away from the neighboring roads than you are.
Next you'll meet up with the Meadowlark Trail, which climbs a bit, right next to an office building. The rural feel will go away for a bit until you head away from the office building and back towards a reservoir. Then the trail heads south next to McCaslin Blvd. until you reach the Coalton Trailhead.
This section of trail (Coalton Trail) l is mostly dirt road, and it gets you to the top of Marshall Mesa. Keep going until you reach yet another small trailhead to meet up with the High Plains trail.
Follow the High Plains trail, which is singletrack with a few mildly technical rocky sections. You'll eventually reach the Greenbelt Plateau trailhead where you can either cross Route 93 to meet up with the rest of the Marshall Mesa trails, or continue along this ride back towards the start.
Continuing along this ride, you'll end up on the High Plains Trail, which is singletrack, with a few mildly technical rocky sections. From here, turn right onto Greenbelt Plateau Trail and climb this mellow, mostly smooth section of trail. After the trail starts back downhill, take a right turn over a couple of log stairs, then down a bit more to some more log stairs and a short technical rocky bit, and over a bridge to cross the irrigation ditch.
Turn left onto the Community Ditch trail heading west, and ride until you reach Route 93. Here, you have another option to cross 93 and ride the Marshall Mesa trails to the west. But to get back to the trailhead, take a right onto Coal Seam.
Coal Seam is mostly downhill back to the trailhead, and somewhat technical, with twists and turns and rocks to keep things interesting. Ride the final rock garden, or ride around it, and you'll be back where you started.
History & Background
Local Club: Boulder Mountainbike Alliance
May 28, 2020: BMA’s COVID-19 Recommendations for Safe Mountain Biking
May 20, 2020: Help kids save dirt jumps in Longmont
Land Manager: Boulder County, CO - Parks and Open Space