Tucson is the sleeper on this list but not to be left out.
Tucson is the sleeper on this list but not to be left out. This desert oasis has more bicycle infrastructure than any other city in the U.S., boasting more than 700 miles of designated bikeways. You can ride year-round without bundling up, and the mountain bike trails outside of town, as in the Santa Catalina Mountains, are top-notch -- just don’t crash into a cactus!