The Singletree Trail is a regional connector trail. It's wide, easy, and friendly for riders of all abilities. At a short 0.7 miles, most mountain bikers will be using this trail to connect the Mayhoffer-Singletree Trail to the Meadowlark Trail. This trail is also an important link in the Dirty Bismark Loop, a 17 mile loop around Marshall Mesa.
Nearly any route through the Marshall Mesa area will likely include the some or all of this trail. It parallels the Community Ditch and is level, wide, but with a natural surface - so it can be a bit rocky at times.
Starting from where it crosses Highway 93, the trail also connects with the upper end of the Coal Seam Trail. Heading east, the trail meanders following the ditch, offering great views of Boulder and the Flatirons to the north, as well as a chance to see deer, coyotes, and more likely, some of the cows that frequent the area.
Mayhoffer is another connector piece of the Dirty Bismark loop. It was one of the final sections opened, and although this trail is pretty wide and flat now, it will surely narrow down with time as the prairie grasses move back in along the edges. The trail has a very nice easy grade and no rocks at all! It's fantastic for beginners and young 'uns.
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.
High Plains Trail is a great addition to the MarshallValley trail network. It is a nice long segment of trail with fun flowing singletrack. This trail can be run as an out and back, or as part of the Dirty Bismarck loop. From the Greenbelt Plateau trailhead, the trail starts by gently going down through some short rock sections. Don't worry, these are not very technical. They will just bounce you around a little.
We’re not going to stretch the truth here. This isn’t singletrack nirvana. It is, however, a great section of trail to connect High Plains to the other Marshall Mesa trails. It is a really wide road with a little climb up to the top and a nice quick descent back down. If you just have to ride something skinny, there is a singletrack on the east side of the road for long stretches. Thanks to your friends here at BMA, that singletrack next to the road is officially legal to ride on. There is, however, one small section just off this trail that will test your skill.
Park at the main Marshall Mesa trailhead, take the trail to the right, and you're on Coal Seam. It climbs to Community Ditch Trail right before it crosses Highway 93. Expect lots of people out, as this is one of the two options out of the lot.
It's all a gentle climb, rising into the pine trees after crossing a bridge over a ditch. There are some corners with limited sight lines, so be sure to keep your head up and watch for other users. You'll gradually climb out of the trees, through an open section, and then pop out on Community Ditch.
When you get to the Coalton Trail, you couldn't be blamed for thinking it looks a lot like a gravel road. While it lacks in features or much fun, it's a key connector in the Dirty Bismark loop, and is also a great way for those in the Superior/Louisville areas to get of road and into the rest of the Marshall Mesa trail system.
Wide, flat, and gravel is the rule here. The exception is the one main climb, which is often a bit rutted and provides the only potential challenge.