City, Town, or County

Arrowhead Trail

Pennsylvania

Rail Trail

U.S. Fish and Wildlife Service

Arrowwood NWR Leg of the Historic Ft. Totten Trail

North Dakota

Backcountry Trail

USDA Forest Service

Art Loeb Trail

North Carolina

Backcountry Trail

City, Town, or County

Aspen Spring Trail

Arizona

Backcountry Trail

National Park Service

Atlantic White Cedar Swamp

Massachusetts

Backcountry Trail

State

Aucilla River Trail

Florida

Water Trail (other)

Nonprofit

Autauga Creek Canoe Trail

Alabama

Water Trail (other)

City, Town, or County

B-Line Trail

Indiana

Urban Trail

U.S. Fish and Wildlife Service

Back Bay National Wildlife Refuge Trail System

Virginia

Backcountry Trail

National Park Service

Backbone Trail

California

Backcountry Trail

State

Bailey's Woods Trail

Mississippi

Backcountry Trail

City, Town, or County

Baker Park

Texas

Backcountry Trail, Frontcountry Trail

Bureau of Land Management

Bald Mountain Trail

Idaho

Backcountry Trail

USDA Forest Service

Bald Mountain Trail

Utah

Backcountry Trail

USDA Forest Service

Baldy Lookout-Lake Trail #340

Montana

Backcountry Trail

City, Town, or County

Balfour Riverwalk Trail

Massachusetts

Frontcountry Trail, Urban Trail

City, Town, or County

Baltimore & Annapolis Trail Park

Maryland

Frontcountry Trail, Rail Trail, Urban Trail

National Park Service

Bandelier Backcountry Trail

New Mexico

Backcountry Trail

State

Banks - Vernonia State Trail

Oregon

Backcountry Trail, Rail Trail

National Park Service

Baptism Creek

Pennsylvania

Frontcountry Trail