City, Town, or County

Mahoning Shadow Trail

Pennsylvania

Backcountry Trail, Frontcountry Trail, Urban Trail

USDA Forest Service

Maidu Lake

Oregon

Backcountry Trail

USDA Forest Service

Malheur River

Oregon

Backcountry Trail

City, Town, or County

Manhan Rail Trail

Massachusetts

Rail Trail

USDA Forest Service

Mann Gulch Trail #258

Montana

USDA Forest Service

Marble Creek Trail System

Idaho

Backcountry Trail

U.S. Fish and Wildlife Service

Marc Dupuy, Jr. Wildlife Trail

Louisiana

Backcountry Trail

City, Town, or County

Marden E. Cobb Waterway Trail

New York

Water Trail (other)

City, Town, or County

Marion County Trail (MCTrail)

West Virginia

Backcountry Trail, Rail Trail

State

Marjorie Harris Carr Cross Florida Greenway

Florida

State

Marsh Boardwalk

South Carolina

Backcountry Trail

Nonprofit

Martin Van Buren Nature Trails

New York

Backcountry Trail