Pacific Northwest Trail Association
Promotes, protects, and maintains a foot, horse, and mountain bike trail from the Continental Divide to the Pacific Ocean across Montana, Idaho, and Washington. Rails-to-Trails Conservancy
Interested in creating a nationwide network of public trails from former rail lines and connecting corridors.
Rivers and Trails Conservation Assistance Program
Helps communities protect rivers, trails, and greenways on lands outside the federal domain and without federal ownership. Santa Fe Trail Association
Established in 1986, it includes 12 chapters that meet on a regular basis, many of which are active in marking the trail, restoring historic sites, and helping to preserve the history of the trail. Sierra Club
Dedicated to exploring and protecting the earth's wildlands and promoting the responsible use of the earth's resources. Tennessee Trails Association
Non-profit, membership organization that promotes hiking in local, state, and national park systems in Tennessee. Trails.com
Includes information on more than 19,000 hiking, biking and paddling trails across North America; searchable by location or activities. Washington Trails Association
Non-profit membership organization working to preserve and enhance Washington's trail system.
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