I began designing and building trails as a volunteer beginning in the early 1990s — my first system design was in what is now the Bureau of Land Management Molalla River Recreation area, south of Portland, Oregon. After moving to Tucson in 1987, I immediately got involved in trail projects. My first major trail design project in Pima County was in 2004 — 35 miles of the Arizona National Scenic Trail between Saguaro National Park and the Santa Rita Mountains in the Coronado National Forest. My volunteer efforts on that project included planning, organizing, fund-raising,  and supervising construction of the trail. This project, which took seven years, was done with volunteer labor from community volunteers, who contributed  more than 100,000 hours of their time. I have designed and built numerous trails and trail parks for the county, including the award-winning Sweetwater Preserve Trails Park.