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

USDA Forest Service

Refuge Point Cross Country Ski

Montana

U.S. Corps of Engineers

Rend Lake Bike Trail

Illinois

Backcountry Trail, Frontcountry Trail, Urban Trail

USDA Forest Service

Resurrection Pass Trail

Alaska

Backcountry Trail

Private

Rice Creek

Florida

Backcountry Trail

U.S. Fish and Wildlife Service

Rich Guadagno Memorial Trail

Oregon

Backcountry Trail

City, Town, or County

Richard Martin Trail

Alabama

Rail Trail, Urban Trail

USDA Forest Service

Ridge Runner Trail

Missouri

Backcountry Trail

City, Town, or County

Ridgeline Trail

Oregon

Backcountry Trail, Urban Trail

USDA Forest Service

Rim Rock Trail

Illinois

Backcountry Trail

USDA Forest Service

Rim Trail

New Mexico

Bureau of Land Management

Rio Bonito Petroglyph

New Mexico

Backcountry Trail

Bureau of Land Management

Rio Grande

New Mexico

Backcountry Trail

U.S. Fish and Wildlife Service

Rio Grande Nature Trail

Colorado

Frontcountry Trail

City, Town, or County

Ritter Farm Park

Minnesota

U.S. Corps of Engineers

River Bluff Nature Trail

Arkansas

Backcountry Trail

Other Federal

River Bluff Trail

Tennessee

Backcountry Trail