By state

• 4/5

  Grand Canyon

  Arizona

  Ride the South Rim on Hermit Road, closed to private cars most of the year.

  • Road
  • Paved path
  • Mountain bike
  • Family
  • E-bike friendly
• 4/5

  Saguaro

  Arizona

  A paved loop through a saguaro forest, and some of the only national park singletrack in the West.

  • Road
  • Gravel
  • Mountain bike
  • E-bike friendly
• 3/5

  Petrified Forest

  Arizona

  Painted Desert vistas and a piece of old Route 66 on a quiet park road.

  • Road
  • Gravel
  • E-bike friendly
• 2/5

  Chiricahua

  Arizona

  America's newest national park: an 8-mile paved climb through a forest of rock spires.

  • Road
  • E-bike friendly