National Park Service

Rankin Ridge

South Dakota

Backcountry Trail

USDA Forest Service

Rapid River Cross-Country Trail

Michigan

Backcountry Trail

State

Ray Harral Nature Park Trail System

Oklahoma

Backcountry Trail, Frontcountry Trail, Urban Trail

City, Town, or County

Ray Yellig Memorial Trail

Indiana

Backcountry Trail, Frontcountry Trail

Nonprofit

Razorback Greenway 

Arkansas

Frontcountry Trail

USDA Forest Service

Red Canyon Trail

Utah

Urban Trail

State

Red Cedar Hiking Trail

Illinois

Backcountry Trail, Frontcountry Trail

City, Town, or County

Red River

Louisiana

Urban Trail

USDA Forest Service

Red River Gorge

Kentucky

Backcountry Trail

Private

Red Rock Water Trail

Iowa

National Water Trail

City, Town, or County

Red Stick Trail

Oklahoma

Frontcountry Trail

USDA Forest Service

Redbird Fitness Trail

Kentucky

Urban Trail