ATC is a non-profit membership organization whose volunteers and club affiliates protect and maintain the Appalachian Trail, a 2160-mile footpath that extends from Maine to Georgia. Provides up-to-date information on trail conditions, volunteer opport...

Nonprofit organization that converts abandoned railroad tracks into hiking, walking, and biking trails. Includes bookstore and gift shop items, a history, a database of trails, forums and membership details. Based in Washington, DC.

National Park Service project provides technical assistance to community groups and government agencies in conserving rivers, preserving open space, and developing trails and greenways.

A network of 350 walking clubs. Provides a directory of the clubs and walking events. Includes articles and membership information. Based in Universal City, Texas.

Nonprofit organization works to enhance and protect America's network of interconnected trails. Includes action alerts, events calendar, and database of trails and related groups. Based in California.

A federation of more than 85 hiking and environmental organizations and over 10, 000 individuals dedicated to building and maintaining marked hiking trails and protecting the related openspace in the bi-state region.

Provides information about the PCT and the John Muir Trail. Includes trail conditions, descriptions of the five sections, and photo gallery.

Mission is to honor the historic legacy of Lewis and Clark through research, education, preservation, and promotion. Explore the 3, 700 mile Lewis and Clark National Historic Trail from Wood River, Illinois, to Fort Clatsop, Oregon.

Organization helps build, promote, and protect this national scenic trail which spans seven states. Includes trail descriptions and conditions.

A volunteer trails organization which helps to maintain and improve trails, shelters, and cabins in Virginia, Maryland, West Virginia, Pennsylvania, and Washington, DC. Includes club history, hiking tips, and trip reports.