Nonprofit

Francis Beidler Forest Four Holes Swamp Trail

South Carolina

Backcountry Trail

U.S. Corps of Engineers

Frank Raab Nature Trail

Oklahoma

Backcountry Trail

State

Fred Cleator Interpretive Trail

Washington

Backcountry Trail

City, Town, or County

Fred J. Cusimano Westside Overland Trail

New York

City, Town, or County

Fred Marquis Pinellas Trail

Florida

Frontcountry Trail

National Park Service

Freedom Trail

Massachusetts

Urban Trail

USDA Forest Service

Fremont Trail

Oregon

Backcountry Trail

National Park Service

Friendship Hill Loop

Pennsylvania

Backcountry Trail

National Park Service

Frijoles Canyon

New Mexico

Backcountry Trail

Nonprofit

Frisco Highline Trail

Missouri

Frontcountry Trail, Rail Trail, Urban Trail

U.S. Fish and Wildlife Service

Froland Waterfowl Production Area Interpretive Trail

Minnesota

Backcountry Trail

City, Town, or County

Fulbright Spring Greenway Trail

Missouri

Backcountry Trail, Frontcountry Trail, Urban Trail