Starting from where Mapleton Avenue transitions into Sunshine Canyon, this beautiful ridgeline trail runs 1.3 miles up the southern spine, gaining nearly 1,200 feet to the 6,800-foot summit of Mount Sanitas. This is a moderately difficult trail, but it has a number of level spots that make for nice places to rest. And since it follows the ridgeline, it almost always has a great view overlooking the town of Boulder and out to Denver, especially once on the summit. For a gentler stroll, hit the wide Sanitas Valley Trail or cruise along the lower, but also scenic, Dakota Ridge trail, all accessed from the same parking lot.