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