Key moments in the history of hiking and public lands in Arizona.
| Year | Milestone |
|---|---|
| 1919 | Grand Canyon National Park established |
| 1933 | Saguaro National Monument established near Tucson |
| 1985 | Dale Shewalter proposes a border-to-border Arizona Trail |
| 1994 | Arizona Trail Association founded; Saguaro becomes a National Park |
| 2009 | Arizona National Scenic Trail designated by Congress |
| 2011 | Arizona Trail completed, Mexico to Utah, about 800 miles |