Name: Coalton
Rating: 2.5

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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

Jul 29, 2026: First North Foothills Reroute Segment is open

Jul 29, 2026: Boulder County Is Taking a Bigger-Picture Approach to Open Space Planning

Jul 29, 2026: After a six year stall, West Mag is getting new trails

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 20 votes

#10

in Marshall Mesa

#25296

Overall

2.5 from 20 votes

5 Star		10%
4 Star		15%
3 Star		10%
2 Star		45%
1 Star		20%

Trail Rankings

#10

in Marshall Mesa

#2,331

in Colorado

#25,296

Overall

4 Views Last Month

1,830 Since Mar 26, 2013

		41%
		35%
		18%
		0%
		6%
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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

2 Comments

Weather

Current Trail Conditions

All Clear 36 days ago

Update Conditions See History

Add Your Check-In

Check-Ins

Oct 10, 2025

Anonymous

Aug 8, 2021

Private User

May 2, 2021

Sean Marlow

Aug 1, 2020

Holly S

First ride on my bike on flat tires. Very hard, walked some 2.8mi

Sep 10, 2019

Marc Barnes

Aug 2, 2019

Ted Graham

Straight downhill to ride taking it "backwards" on an easy day.

Sep 6, 2018

Katie Purdy

Jul 1, 2018

Jill Henske Keyes

Jun 3, 2018

Jessica W

1st ride 2.8mi

May 6, 2018

Jake Oswald

Short decline/incline good training run for climbing

Nov 19, 2017

Reed Harrington

Mar 26, 2012

Ted Eliason 1

Basically a road 2.8mi — 0h 30m

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