National Park Service
Big Hole Battlefield
Montana
Backcountry Trail
USDA Forest Service
Big Sky Snowmobile Trail
Big Springs Water Trail
Idaho
Big Trees
California
Big Wood River Trail
Bill Williams Mountain Trail
Arizona
Biltmore Campus Trail
North Carolina
Private
Binder Winter Park Nordic Trail
Michigan
State
Bird to Gird Pathway / Indian to Girdwood Trail
Alaska
Backcountry Trail, Rail Trail
Bizz Johnson Trail
Rail Trail
Bureau of Land Management
Black Canyon National Recreation Trail
Other Federal
Black Canyon Water Trail
Arizona, Nevada
National Water Trail
Black Cherry Trail
Pennsylvania
Black Creek Hiking Trail
Mississippi
City, Town, or County
Black Creek System
Ohio
Nonprofit
Black History Trail
District of Columbia
Urban Trail
Black Point Trail
U.S. Corps of Engineers
Black River Hike and Bike Trail
Missouri
Backcountry Trail, Urban Trail
Black Willow Water Trail
Water Trail (other)
Blackberry Trail
South Dakota
