- Nonprofit organizations
- UNESCO World Heritage Sites
- Professional Trailbuilders
- Land trusts
- Counties
- Municipalities
- Towns
- Villages
- Bicycle Manufacturers
- State Parks
- Bureau of Land Management
- United States Forest Service
- National Park Service
- Provincial Governments (Canada, Australia, Philippines)
- Environmental Agencies
- Special Autonomous Regions (Hong Kong)
- Private Landowners
- Outdoor Education Camps
- Ski Resorts
- Family Ranches/Farms
- Livery Stables
- Irrigation/Ditch Companies
- Tribal Lands
- US Air Force Academy
- Presidents/Governors
- Musicians/Artists
US Federal Government Agencies
US State Agencies
US Municipalities
Non-Profit Organizations
Trail Building Clubs and Organizations
Private Clients
International Governments and Organizations
