The ATA’s Challenge 43 is a special program for ambitious volunteers who want to explore the whole 800 miles of the Arizona Trail from a service perspective. We’ll help you track your participation in work events and projects on all 43 passages of the trail. When you’ve completed the Challenge, there’s a special prize in it for you!


  • (Please indicate email address used to log in to the Volunteer portal)
  • If you are adding an event to your Challenge Listing, please include the Passage Number, approximate date and some basic details about the work.
  • This field is for validation purposes and should be left unchanged.