City, Town, or County

Blackhawk Trail

Iowa

Backcountry Trail

State

Blackstone River Bikeway

Rhode Island

Frontcountry Trail

USDA Forest Service

Blacktail - Wild Bill

Montana

Backcountry Trail

City, Town, or County

Blackwater Creek

Virginia

USDA Forest Service

Blackwater Fire Memorial

Wyoming

Backcountry Trail

State

Blackwater Heritage State Trail

Florida

Nonprofit

Blevins Gap Nature Preserve Trail System

Alabama

Backcountry Trail, Frontcountry Trail, Urban Trail

National Park Service

Blue Beaver Trail

Tennessee

Backcountry Trail

U.S. Fish and Wildlife Service

Blue Hill Hiking Trail

Minnesota

Backcountry Trail

USDA Forest Service

Blue Lake

Washington

Backcountry Trail

USDA Forest Service

Blue Lake Trail

California

Backcountry Trail

U.S. Corps of Engineers

Blue Marsh Lake Multi-Use Trail

Pennsylvania

Backcountry Trail