Name: Coalton
Rating: 2.5

Toolbox

Plan in onX Backcountry

Driving directions
Download GPX File

Know This Trail?

Upload a photo

Dogs Leashed

E-Bikes Allowed

E-bikes allowed per regulation: bouldercolorado.gov/guide/g…

Description

This section of trail is nothing special, but it makes up the southeast corner of the Dirty Bismarck ride. It allows riders to connect McCaslin and W 120th Ave. without riding any pavement.

Contacts

Local Club: Boulder Mountainbike Alliance

Nov 17, 2025: Trail Update: South St Vrain

Nov 14, 2025: Another Step Closer to new Betasso Connector

Oct 24, 2025: Boulder County Moves One Step Closer to a Safer Boulder-to-Betasso Connection

Land Manager: Boulder County, CO - Parks and Open Space

Shared By:

Michael Ahnemann with improvements by Austin Cowan

Full Details

Trail Ratings

2.5 from 19 votes

#10

in Marshall Mesa

#25189

Overall

2.5 from 19 votes

5 Star		11%
4 Star		16%
3 Star		11%
2 Star		42%
1 Star		21%

Trail Rankings

#10

in Marshall Mesa

#2,316

in Colorado

#25,189

Overall

4 Views Last Month

1,830 Since Mar 26, 2013

		44%
		38%
		13%
		0%
		6%
		0%

Add a Photo

Photos

May 22, 2018 near Superior, CO

Feb 26, 2018 near Superior, CO

Dirty Bismark heading west during a spring ride.

May 31, 2017 near Superior, CO

Sun setting this evening obscured by smoke from the wildfires in the north and west.

Aug 8, 2021 near Superior, CO

Looking east from the top of the hill, back to the Coalton Trailhead and car park.

Aug 8, 2021 near Superior, CO

Your Rating:
Your Difficulty:
Your Favorites:	Add To-Do · Your List

Coalton

“A mostly doubletrack/dirt road section connecting McCaslin Blvd with W 120th Ave. ”

2.8

4.5

5,949' 1,813 m

5,552' 1,692 m

398' 121 m

0' 0 m

3%

12%

Toolbox

Know This Trail?

Dogs Leashed

E-Bikes Allowed

Description

Contacts

Shared By:

Trail Ratings

#10

#25189

#10

#2,316

#25,189

Photos

2 Comments

Comment Type:

Weather

Current Trail Conditions

Check-Ins

Nearby Recommended Routes

Marshall Mathers LP

Rock Creek Farm Loop

East Boulder Trail

Gunbarrel to Niwot: Cottontail Trail - Niwot Loop - LoBo Trail

Farmers Highline Canal and Big Dry Creek Loop Trail

North Table Figure 8: Best of the Descents

Join the Community! It's FREE