There are 2 HVC properties in or near Breckenridge, CO. Thereare many walking, running, and biking trails originating in town, and numerous others within a short driving distance. Note that Breck is at 9600 feet (close to 3000 meters) elevation, and we did hikes that went to about 12,200 ft (over 3700m). That was enough altitude for us, but there were plenty of options that were even higher.
Great options - I’ll add the relatively nearby but much more secluded/quiet HP Keystone Colorado.