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Cobalt Trail

Easy/Intermediate
 2.0 (2)

This gradually downhill trail connects several area runs and passes below the Old Mill ruins.


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Map Key

0.9

Miles

1.4

KM

96%

Runnable

5,548' 1,691 m

High

5,338' 1,627 m

Low

210' 64 m

Up

0' 0 m

Down

4%

Avg Grade (3°)

8%

Max Grade (5°)

Dogs Off-leash

Features Views · Wildflowers · Wildlife

Off-leash dogs must be under voice and sight control. Bikes are not permitted on this trail.

Runner Notes

Smooth trail, several muddy spots after very heavy rain. No shade.

Description

Starting from the eastern end of the Cobalt Trail at the Boulder Valley Ranch Trailhead, run over gently descending, open terrain paralleling Longhorn Road. The fields here are grass covered and feel very bucolic. The trail is mostly singletrack, but it sometimes widens as it arrives at gates. Looking east, you'll see views of pointy Haystack Mountain and Boulder Reservoir in the distance.

Eventually the trail veers away from the road and skirts several scattered prairie dog communities. On the hillside to the south, you'll see the huge concrete foundations for an old mill that once operated here. Next, contour around the side of a low butte punctuated by layered rocks that jut out. This part of the trail is high enough to allow good views south of the distant flatirons and Bear Peak.

The Cobalt Trail ends at a gate and then dumps out onto the wide, road-like terminus of Eagle Trail. To reach the informal trailhead and parking area, head west another hundred feet on the Eagle Trail and pass through another gate into the parking area.

Flora & Fauna

Eagles, northern harriers, red-tailed hawks, deer, coyotes, prairie dogs, rattlesnakes, bull snakes.

Contacts

Shared By:

Megan W

Trail Ratings

  2.0 from 2 votes

#36513

Overall
  2.0 from 2 votes
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2 Star
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1 Star
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Trail Rankings

#2,782

in Colorado

#36,513

Overall
10 Views Last Month
339 Since Apr 30, 2015
Easy/Intermediate

50%
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Photos

Wide open views along the Cobalt Trail
May 11, 2015 near Boulder, CO
Layered shelves of rock along the western end of the Cobalt Trail
May 11, 2015 near Boulder, CO
Looking east over the fields and Mesa Reservoir
May 11, 2015 near Boulder, CO
Starting out from the trailhead on the Sage Trail
Apr 30, 2015 near Boulder, CO
Wet muddy spots on the Cobalt Trail
May 11, 2015 near Boulder, CO

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