Pacific Crest Trail Through-Hike, 1994. 2,650 miles.
Round-the-World Seven Canyon Quest, 2000-1; Attempt to visit the deepest canyon on each continent. 51,000 air miles.
- Africa - Fish River Canyon - Nambia
- Europe - Vikos Canyon - Greece
- Asia - Yarlung Tangspo - Tibet
- Australia - Geehi Valley - New South Wales
- Antarctica - Taylor Valley - The Dry Valleys
- South America - Colca and Cotahuasi Canyons - Peru
- North America - Cooper Canyon - Mexico
US Cross-Country Cycle, Southern Tier Route, 2002. 3,000 miles.
Yukon River Kayak, source to sea, 2006. 2,000 miles.
Washington and Oregon Coasts by bike, 1996
Extensive backpacking in Grand Canyon, 1973 to present.