State

Farm Island System Trail

South Dakota

Backcountry Trail

U.S. Corps of Engineers

Farmdale Trail System

Illinois

Backcountry Trail, Rail Trail

National Park Service

Fatlands Trail

Pennsylvania

Backcountry Trail

City, Town, or County

Feaster Trail

Arkansas

Urban Trail

USDA Forest Service

Feather Falls Trail

California

Backcountry Trail

Nonprofit

Feeder Canal Towpath Trail

New York

Frontcountry Trail

Other Federal

Felix Lake Nature Trail

Florida

Backcountry Trail

U.S. Fish and Wildlife Service

Ferguson Bayou Nature Trail

Michigan

Backcountry Trail

U.S. Fish and Wildlife Service

Finger Lakes Canoe Trail

Minnesota

Water Trail (other)

State

First Landing State Park Trails System

Virginia

Backcountry Trail

USDA Forest Service

Fish Creek Falls Trail #1102

Colorado

Backcountry Trail, Urban Trail

USDA Forest Service

Fish Creek Trail

Utah

USDA Forest Service

Fish Lake Trail

Oregon

Backcountry Trail

Bureau of Land Management

Fisher Towers Trail

Utah

Backcountry Trail

USDA Forest Service

Fishhook Creek Nature Trail

Idaho

City, Town, or County

Flagler Trail

Florida

Backcountry Trail, Frontcountry Trail, Rail Trail, Urban Trail

National Park Service

Flat Top-Fallingwater Cascades

Virginia

Backcountry Trail

State

Flint Hills Trail State Park

Kansas

Rail Trail

Nonprofit

Flint River Water Trail

Michigan

National Water Trail

State

Florala-Lake Jackson Scenic Trail

Alabama

Backcountry Trail, Urban Trail