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

State

Mary Ingles Trail System

Kentucky

Backcountry Trail

Nonprofit

Mason-Dixon Trail

Pennsylvania

Backcountry Trail

City, Town, or County

Mass Central Rail Trail (Northampton Section)

Massachusetts

Frontcountry Trail, Rail Trail, Urban Trail

USDA Forest Service

Massanutten Trail

Virginia

Backcountry Trail

City, Town, or County

Matsell Bridge

Iowa

Frontcountry Trail

USDA Forest Service

May Creek Trail

Montana

Backcountry Trail

City, Town, or County

McDaniel Farm Park Trails

Georgia

Backcountry Trail, Urban Trail

USDA Forest Service

McGowan National Recreation Trail

California

Backcountry Trail

USDA Forest Service

McKenzie River Trail

Oregon

Backcountry Trail

USDA Forest Service

Meadow Creek Trail #726

Idaho

Backcountry Trail

U.S. Fish and Wildlife Service

Meadowlark Trail

Nebraska

Backcountry Trail, Urban Trail

City, Town, or County

Medina River Greenway

Texas

Backcountry Trail, Frontcountry Trail, Urban Trail

U.S. Corps of Engineers

Memory Lane

Missouri

Backcountry Trail, Urban Trail