Region
Colorado
4
Alaska
3
Anchorage
1
Black Hills National Forest (S.D. and Wyo.)
1
California
1
Denver
1
Dugout Gulch Botanical Trail (Wyo.)
1
Fairfax County
1
Fort Ord
1
Iditarod National Historic Trail (Alaska)
1
John Heinz National Wildlife Refuge at Tinicum
1
John Heinz National Wildlife Refuge at Tinicum (Pa.)
1
Kansas
1
Pennsylvania
1
Virginia
1
West (U.S.)
1
Western Slope
1
White Mountains National Recreation Area
1
White Mountains National Recreation Area (Alaska)
1