MTB Project
BEST OF PHOTOS iPHONE / ANDROID FORUM
search
MTB Project has launched a new site: Trail Run Project, and we're giving away loads of running gear. Check it out!

Dirty Bismarck

Consensus:    (details)
 2.8 from 32 votes
green  Easy from 9 votes
Rank: #1 in the Marshall Mesa area
#158 in CO, #1,271 Overall
Views: 3,448. Last 30 days: 146
Green
Condition:
Apr 24 Green - Mostly Dry Some Mud
Featured Ride near Superior,  area, 
“A fun Boulder area cruise following the famous Morgul Bismarck road course.”
Michael Ahnemann on Mar 21, 2013
Getting There     GPX File     Print
15.224.5 milesKilometers 1,090’332 m Ascent 5,965’1,818 m High 3% Avg Grade (2°)
90% Singletrack -1,090’-332 m Descent 5,519’1,682 m Low 13% Max Grade (7°)
Overview
1:56 average time for 20.1 miles. Details

This ride follows the well-known Morgul Bismarck road cycling route - a famous race stage in the 70's and 80's.

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
There are several trailheads along this route, so start wherever it's convenient. You can also cross over Route 93 in a couple of places to ride more of the Marshall Mesa trail system.
Description
The trail as marked here starts and ends at the Marshall Mesa trailhead, which is the largest trailhead along the trail, closest to Boulder. From the trailhead, you'll head onto the Marshall Valley Trail, which is mostly flat with a short solid-rock playground thrown in.

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
The Morgul Bismarck is a relatively famous stage from the Red Zinger / Coors Classic road cycling race from the 1970's and 1980's. Over time, trails along the perimeter of this classic road route have been built, making the Dirty Bismarck MTB trail.
View in 3D
COMMENTS
OTHER RIDES NEAR HERE
4.1 (31)
A tour of the southern half of White Ranch's best features.
near Golden, Colorado
4.0 (1)
A quick lap of some of the fun singletrack on offer at Valmont Bike Park
near Boulder, Colorado
4.0 (5)
The course of the eponymous underground, unsanctioned, unofficial, mountain b...
near Nederland, Colorado

YOU AND THIS RIDE
Your To-Do List: Not on it   Add it! | Your Full List »
Your Check-Ins:
-none-
Add a New Check-In | View All »
Your Opinion:
Stars:  
Difficulty: -none- Change to: greengreenBlueblueblueBlackblackdoubleblack
Share This Page
Improve This Page
Add Photo or Map Symbol
Edit Description or GPS track


PHOTOS of Dirty Bismarck
 3.5 from 2 votes
Looking out to the Flatirons from the Greenbelt Plateau. (Superior, Colorado)
 3.0 from 2 votes
Open plains, horses, and cows combine with smooth singletrack to make th... (Louisville, Colorado)
 3.0 from 2 votes
A short but entertaining rock playground near Marshall Mesa trailhead. (Superior, Colorado)
 3.0 from 2 votes
Looking west up the Community Ditch trail. (Superior, Colorado)
 2.5 from 2 votes
Riding the plains on the easternmost section of the Dirty Bismarck ride.... (Louisville, Colorado)
 2.0 from 1 vote
Heading out from the trailhead, the smooth wide trail awaits - much like... (Superior, Colorado)
Directory | FREE Stickers | FAQ | Mobile Site | Advertise
© 2015 Adventure Projects, Inc | Terms | Privacy | Contact
Embed trails and maps on YOUR site!
Mountain Project
Beyond the Guidebook:
The Definitive Climbing Resource
Trail Run Project
Inspiration & Motivation
to Fuel Your Run
MTB Project
Next Generation Mountain
Bike Trail Maps
Powder Project
Backcountry, Sidecountry
& Secret Stashes
Hiking Project
Better Data. Better Tools.
Better Hikes!