National Park Service

Green and Nolin Rivers Blueway

Kentucky

National Water Trail

Nonprofit

Green Mountain Recreational Preserve Trail System

Alabama

Backcountry Trail

State

Green Ridge S.F. Trail System

Maryland

Backcountry Trail

City, Town, or County

Greenbelt Bikeway

Illinois

Urban Trail

State

Greenbrier River Trail

West Virginia

Rail Trail

USDA Forest Service

Greyrock Mountain

Colorado

Backcountry Trail

Bureau of Land Management

Grimes Point Petroglyph Trail

Nevada

Backcountry Trail

National Park Service

Guadalupe Ridge Trail (GRT)

New Mexico, Texas

Backcountry Trail

City, Town, or County

Guadalupe River Trail

California

Frontcountry Trail, Urban Trail

State

Gunlogson Nature Preserve

North Dakota

Backcountry Trail

City, Town, or County

Hackensack River Greenway through Teaneck

New Jersey

Frontcountry Trail

Nonprofit

Hagley Museum Trail System

Delaware

National Park Service

Halemau'u Trail

Hawaii

Backcountry Trail

U.S. Fish and Wildlife Service

Halfmoon Lake Canoe Trail

Minnesota

Water Trail (other)

USDA Forest Service

Hanging Valley Trail

Montana

Backcountry Trail

USDA Forest Service

Hanna Flats Trail #600

Idaho

City, Town, or County

Harbins Park Trail System

Georgia

Backcountry Trail

Nonprofit

Harlem Valley Rail Trail - Columbia County

New York

Rail Trail

Nonprofit

Harlem Valley Rail Trail - Dutchess County

New York

Frontcountry Trail, Rail Trail

Nonprofit

Harriman Long Path

New York