Give back to the places we love and set the world record for the most people improving trails in a single day. Participants are asked to take the pledge to pack out trash, join a trail work project or clean up a park. The National Trail System also features hikes, biking and horseback rides, paddling trips, bird watching, geocaching, gear demonstrations and stewardship projects in Arizona and all across the country. Â Times and locations vary. Some parks have entry fees. americanhiking.org/national-trails-day
