Northeast of Breckenridge, there is an 11 mile section of the Colorado Trail open to epic mountain biking.
To reach the trailhead from Breckenridge, head north on SR9 for about 4 miles. The Colorado Trail (Continental Divide Trail) crosses here. You may want to turn right heading east climbing up CR6 (Tiger Road) for about 6.5 miles to the upper crossing of the Colorado trail and ride the trail northwest back down to SR9.
Overall, Colorado Trail - Breckenridge is the 108th most popular mountain bike trail of all 176 mountain biking rides in Colorado.