Nestled in the hills of Boulder, Colorado, the Chapman Drive Trail is a historic, double-track route ascending Flagstaff Mountain. Initially built in the 1930s by the Civilian Conservation Corps, the trail is 3 miles long and offers a relatively steep 940-ft elevation gain. With its Civilian Conservation Corps-era stone bridges and sweeping views of Longs Peak and Betasso Preserve, this trail has more to offer than just a good workout.
From Boulder, head west on Boulder Canyon (Hwy 119) for approximately 3 miles. Pass the Fourmile Canyon and Alps Lodge on the right and take a left at the Red Lion restaurant's entrance bridge. The parking lot and trailhead are immediately to the right after crossing the bridge.
The Chapman Drive Trail is primarily a jeep road or double-track trail loaded with switchbacks but free of obstacles, making it a great option for those looking to build stamina rather than technical skills. Ascent can take between 15 to 40 minutes, depending on one's fitness level, while the descent can be as quick as 5 minutes.From the Red Lion in Boulder Canyon, the trail starts with crossing a new bridge installed in 2012 and ascends gently up Flagstaff Mountain. Do not be misled by the "Private Road" sign; you are welcome to proceed. The stone work on the turns and the views from Realization Point at the summit are other elements that add value to the ride.
The Chapman Drive Trail might not offer the technical thrills of a traditional singletrack, but it holds its own charm. Whether it's the historic Depression-Era stone bridges or the possibility of wildlife encounters, this trail offers a quiet and isolated experience. It's also a practical route for accessing Walker Ranch, especially for locals looking to make a loop. So, if you're in Boulder and have 40 minutes to spare, Chapman Drive Trail is well worth the climb.
10 mi 
