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Jamestown Slaughterhouse Loop


Loop from Jamestown on double and singletrack with a little hike-a-bike and grab a pint or burger at the Merc after!

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8,852' 2,698 m


6,902' 2,104 m


2,138' 652 m


2,126' 648 m



Avg Grade (4°)


Max Grade (19°)

Dogs Off-leash

E-Bikes Unknown

Features -none-

CR102J and Slaughterhouse Gulch are closed to all motorized vehicles.


A steep climb up Slaughterhouse Gulch (FS Road #510.1) to fine singletrack downhill back, ending with a short hike-a-bike where the flood of 2013 tore the trail and the Old Ward (Gold Lake Road (County Road #102J)) road out. Pass through alpine meadows, aspen groves, and mining era ruins. Views of the Divide, too.

Need to Know

After the 2013 floods, the 2-3 mile section in the canyon along the river is completely unrideable. There are 5+ river crossings temporarily constructed with fallen logs that can be very dangerous in high water. This section of the trail is extremely difficult to follow & dangerous with a bike.

Public parking and bike racks in the center of Jamestown, next to the town square park across from the Mercantile (better known as 'The Merc'; a great mountain cafe).

The Merc often has music, too, it's worth checking the open hours if you're planning a visit:


Start and head back down out of town, turning right at the Firehall onto the bridge over the James creek. Continue down on Main Street and straight onto Cemetery Road where you start to climb uphill. You'll see a gate (no motorized beyond) that lets you know you are in the right place and about to get on CR208.

Ride up and past the restored ruin of the Blue Jay Mine (see photo). Continue on rising up above the mine, through high alpine meadows, and pass the ruin of an early homesite where the meadows end and you enter aspen glades. Here, it gets steep to attain the ridge-top where you turn right (north) onto FS Road 509.1 (Flying Squirrel) if you can ride this, you are a beast.

At the top, turn right onto Walker Mountain (FS Road #509.1A), keeping up the clockwise (right) turns. You climb a few more rises up top and roll north, getting to huge views including snow-topped peaks of the Continental Divide. On the top, while riding north, you'll come across other turns but stay on Walker Mountain (FS Road #509.1A). Eventually, you'll see well-ridden unsigned singletrack (Walker Mountain Alternate) break off to your left, staying north. This is what you want and some of the best riding on this route.

Begin descending the Walker Mountain Alternate sweet downhill track, until it bottoms out rejoining Walker Mountain (FS Road #509.1A) lower down. It's extremely fun, in a gnarly kind of way. People have clearly done a little trail building on this section, sometimes ramps over log-fall, berms, etc. In a minute, you're at the end of this track and hit Walker Mountain (FS Road #509.1A) where you turn downhill to your left. In a minute, you see the juncture with the old Gold Lake Road (County Road #102J). It's closed to all motorized, but you can ride sections of it.

You follow Gold Lake Road (County Road #102J) all the way back down into town, this section is pretty wild and only sees a few hikers usually, because the very bottom is un-rideable due to the flood of 2013.

The trail starts out fin, passing through meadow, following the Jim Creek until crossing it. You might be able to ride it in low water, but, otherwise, it's time to shoulder that bike and portage through the water. Ride the old Gold Lake Road down toward town until you just can't anymore. There was ~one mile of hike-a-bike, ride the rest and roll back into town. After this, you just might want to drop in for Breakfast / Brunch / Pints at the Merc! (9-2 Sat, Sun).


Shared By:

Charles S with improvements by Kate Lynn

Trail Ratings

  2.5 from 12 votes


in Jamestown


  2.5 from 12 votes
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in Jamestown


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282 Views Last Month
3,819 Since Aug 5, 2018



Alpine meadows near homesite ruin on Slaughterhouse gulch loop.
Aug 5, 2018 near Boulder, CO
The Old Ward Road
Aug 5, 2018 near Niwot, CO
Would not recommend. The last 3 miles are full of river crossings and unrideable. Hard to follow the trail.
Jul 6, 2020 near Niwot, CO
You have to hike a bike most of the last mile. It is amazing what the 2013 flood did. There use to be a road here. Now tree-bridges over deep pools.
Aug 5, 2018 near Niwot, CO
Bull Moose on the trail!
Aug 5, 2018 near Niwot, CO
Divide views!
Aug 5, 2018 near Boulder, CO


Current Trail Conditions

Update Conditions
Bad / Closed 7 days ago See History
Add Your Check-In


Jul 2, 2020
Eric Davis
5h 30m
Sep 22, 2019
Mike Plansker
May 17, 2019
Liza York
Aug 27, 2018
Nate Hansen
Hard uphill. Kill my dad.
Aug 4, 2018
Charles S