Region
Michigan
30
Colorado
17
United States
17
Sleeping Bear Dunes National Lakeshore
15
Sleeping Bear Dunes National Lakeshore (Mich.)
15
Arizona
11
Wisconsin
11
Utah
10
Oregon
9
Idaho
8
Chequamegon National Forest
7
Iowa
7
New Mexico
7
Indiana
6
California
5
Chequamegon National Forest (Wis.)
5
Missouri
5
Montana
5
New Jersey
5
Texas
5
West (U.S.)
5
West Virginia
5
Alaska
4
Massachusetts
4
Minnesota
4
Oregon National Historic Trail
4
Santa Fe National Historic Trail
4
Wyoming
4
Continental Divide National Scenic Trail
3
Florida
3
Guadalupe Mountains National Park
3
Indiana Dunes National Park
3
Indiana Dunes National Park (Ind.)
3
Nebraska
3
Nicolet National Forest
3
North Dakota
3
Ozark Trail (Mo. and Ark.)
3
Washington (State)
3
Alabama
2
Apache-Sitgreaves National Forest
2
Apache-Sitgreaves National Forest (Ariz.)
2
Arkansas
2
Black Canyon of the Gunnison National Park
2
Black Canyon of the Gunnison National Park (Colo.)
2
Blue Ridge Parkway (N.C. and Va.)
2
Chequamegon-Nicolet National Forest
2
Chincoteague National Wildlife Refuge (Va. and Md.)
2
Comanche National Grassland
2
Comanche National Grassland (Colo.)
2
Des Moines River
2
more ...