Hall Ranch is part of Boulder Parks and Open Space. It is located one mile west of Lyons on Hwy 7. Only the Bitterbrush and Nelson Loop trails are open to mountain bikers. These trails are suitable for adventuresome beginners and more advanced riders. The terrain is generally open, the grade not very steep, and the trail mostly gravel with some rocky sections. The rider will cover 7.6 miles and gain 1080 feet from the trailhead up and around Nelson Loop and back. Many bikers like to ride the Loop in both directions before heading back down to the parking lot. In 2008 a new connector trail, the Picture Rock Trail, was constructed linking Hall Ranch with Heil Valley Ranch to the south. Now the network of trails in both parks extends for over fifteen miles.
For the official website, please click here.