This segment of the Great Divide Mountain Bike Route climbs out of Colorado and into New Mexico. There it traverses the remote, high-elevation Tusas Mountains before passing through three New Mexico villages straight out of Old Mexico: Canon Plaza, Vallecitos, and El Rito. South of Abiquiu, home of the late painter Georgia O'Keefe, a tough, 25-mile climb up Polvadera Mesa leads into the Jemez Mountains. Elk and black bears are common residents...