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blueBlack Walker Ranch

  4.5 ( 98 )

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7.6 mile 12.3 kilometer loop


Ascent: 1,594' 486 m
Descent: -1,585' -483 m
High: 7,335' 2,236 m
Low: 6,439' 1,963 m


Avg Grade: 8% (5°)
Max Grade: 59% (30°)


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Trail shared by Nicholas Shannon

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All Clear 2 days ago See History
Dry - No mud, snow, or ice. Great conditions!

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An awesome and challenging hike near Boulder with great scenery.

Nicholas Shannon

Features River/Creek · Views · Wildflowers · Wildlife


This route it is located up Flagstaff road, which is worth the drive on its own!

You'll climb as much as you descend on this somewhat challenging loop, with sections of smooth singletrack, rocky sections, and even some steep steps leading down to a creek.

Need to Know

This is a popular trail for Boulder-based mountain bikers, so keep an eye out.


Hiking counter-clockwise, as mapped, you'll start out with a consistent descent. Once the initial descent is complete, you'll cruise along the creek for a bit on nice, level ground. That doesn't last long, however, before you find yourself climbing steeply again.

Keep climbing until you hit a couple of switchbacks. You'll then emerge near Gross Dam road. This is a nice spot for a quick rest as you take in the great views. Continue down the trail following a contour along the hillside. Shortly thereafter, you'll return to the forest.

Take the set stairs leading down a couple hundred feet to the creek. It's rocky and steep here, and it can even be a bit tough to maintain your footing. When you finally reach the creek there are some great spots to soak if you need to be refreshed by the COLD water. From here, hike up a loose two track for a bit, then take a left eventually getting back onto singletrack. You'll start to climb through the trees using a series of switchbacks that pop you out of the trees and onto the last bit of trail. Follow this all the way back to the trailhead.


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Mar 23, 2019
Joe Martinez
Beautiful views various terrain from ice, to hard pack , to mud, to gravel. Spikes were needed on 60% of trail especially the step climb from river 9mi — 4h 00m
Mar 23, 2019
Mike Amolsch
9.1 miles, 4 hours (8 am- 12 pm)- extreme icy spots. The stairs were very icy. Muddy and dry in other spots! Great scenery- river was amazing! 9mi
Mar 10, 2019
George Twigg
Great hike! Superb variety of views and terrain. Trail markings not great at times, I got a bit lost on the backside. Icy in places, glad I had spikes
Feb 16, 2019
Greg Mulder
Feb 3, 2019
Logan Shaver
Jan 3, 2019
Patrick Csongei
quiet, peaceful, good weather. new trail pattern that is different from the map in hikingproject 7.8mi
Dec 26, 2018
Will Stowe
Mostly dry with some significant icy spots in the low areas. Beautiful! 7.9mi
Nov 18, 2018
Jordan Frdnmkr
Lil snowy. Hiked with Nick. 8mi

Trail Ratings

  4.5 from 98 votes


in Walker Ranch


  4.5 from 98 votes
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