Hall Ranch

 134 votes
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Featured Ride

11.8 Miles 19.0 Kilometers



1,793' 547 m


-1,793' -547 m


6,686' 2,038 m


5,462' 1,665 m



Avg Grade (3°)


Max Grade (13°)

All Clear

17 days agoUpdate

A favorite for Boulder area riders - scenery, singletrack, technical sections... it's got it all!

Mike Ahnemann


Dogs are prohibited on all Hall Ranch trails.
Hall Ranch has something for just about everyone. The most commonly ridden trail (Bitterbrush) has a challenging technical Rock Garden that only fit expert riders can clean bottom to top. The Nelson Loop up top has some beautiful views of the Arapahoe range and Longs Peak in addition to beautiful, flowy singletrack. And intermediate riders can find some suitable terrain by starting on the Antelope Trail, that also leads to the Nelson trail, but bypasses the technical rock garden on Bitterbrush.

This trail is one of the most popular trails within 40 minutes of Longmont/Boulder, which means it can get very crowded, especially on weekends. There can also be significant horseback traffic, so be prepared for frequent stops along the descent as you yield to uphill riders, horses, and hikers. It can be frustrating because the descents are so much fun - but be courteous... it's a challenging trail for horses, and they can be easily spooked.

Need to Know

Alternative ride options:

You can also ride a short section of road to link up with Picture Rock trail and Heil Ranch for a big day in the saddle.

Or you might choose to relax after your ride by hanging out in the park by the creek in Lyons and taking a dip to cool off, or by tossing back a pint or two at the popular Oskar Blues brewery in town.


The most common way to ride the trails at Hall is to start from the Bitterbrush trailhead, so that's how we've mapped it for this description. There are two parking lots at this trailhead, and toilets, so most people (including the horseback riders) start here. However, this is also the most difficult way to ride Hall. Intermediate and beginner riders might choose to start from the smaller trailhead to ride up the Antelope Trail.

Starting on Bitterbrush - Lower Section, the singletrack begins right at the end of the upper parking lot. There's a nice sign there to help you get your bearings. Climbing starts almost immediately, but the trail starts off mostly smooth. Before long, you'll start riding up and over some small rocks, and the trail will get rockier as you climb.

About 3/4 of a mile in, the well-known rock garden starts. From here, it's a steep climb with frequent big technical moves over rock formations. You won't need to be a trials rider to clean this section, but you'll need to be a skilled mountain biker with enough fitness to keep your heart from jumping out of your chest.

There's a bench at the top of this section with a nice view - a perfect spot for a quick snack if you need it. Otherwise, continue down a short descent and merge onto the singletrack (Bitterbrush - Upper Section) coming up from the Antelope Trail. Settle in for a mostly grandual and smooth climb for about a mile and a half up to the Nelson Loop.

The Nelson Loop can be ridden either direction, although clockwise seems to be the most common. You'll climb further to the highpoint at about 6700' where there's a hiker's only trail heading back down to the trailhead and another bench to rest on. Here you'll be rewarded with 360 degree views. Notably, you'll see Mt. Meeker and Longs Peak. The rest of the loop from this point is a fantastic descent.

Now it's downhill almost the entire way back down to where you merged onto the Antelope Trail. You can either merge back onto Bitterbrush - Lower Section and re-trace your steps, or add a quick out and back by continuing on the Antelope Trail down to its start and riding back up to the Bitterbrush junction. Antelope is a mostly smooth, intermediate trail - it's a fun detour if you've got the energy.

Once you start heading back down Bitterbrush - Lower Section, you'll bounce your way back down through the Rock Garden, and it's almost all downhill from here back to your car.

History & Background

From multiple points along the Nelson Loop, you'll see small spur trails leading down to the what once was the historic Nelson Ranch. You can ride/walk right down to the remains of a home and a grain silo.

More than 20 different families lived and operated businesses in the area that we now call Hall Ranch. Some prospected, some farmed, and some quarried sandstone. In the mid-1940s, Hallyn and June Hall began ranching on what became known as the Hall Ranch. For more than 50 years, this property was a working foothills ranch. The Hall family expanded their land ownership and grazed livestock throughout the property. They also operated other businesses including logging and rock quarrying.


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4.3 from 134 votes

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Apr 23, 2017
Sorcha Dundas
Apr 8, 2017
Jason Sherman
Apr 7, 2017
Mike Miller
Trail is nearly bone dry, few puddles. Bottom section led to some hiking.. No doubt it's tough.
Mar 30, 2017
Travis Parsons
Mar 30, 2017
Chris Sulfrian
good conditions, just a few muddy spots! 10.1mi
Mar 25, 2017
Travis Parsons
Mar 25, 2017
Fernando Esteban
Mar 19, 2017
Bryce Cox

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  4.3 from 134 votes


in Hall Ranch


  4.3 from 134 votes
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All Clear 17 days ago

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Hey I'm just down the road from Lyons in Boulder! Sara just had dinner at the Oskar Blues Brewery and played a bunch of pinball at the pinball spot next door. I'll have to check out the rock gardens. Jun 4, 2014

Yep, it's a Black Diamond all right. We also saw TWO Diamondbacks, intertwined, doing a mating dance in the middle of the trail Saturday. Pretty cool. Jul 21, 2015

Incredible stuff. I'll be back for sure. Jul 25, 2015

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