State

Daniel Boone Scout Trail

North Carolina

Backcountry Trail

USDA Forest Service

Danny On Memorial Trail

Montana

Backcountry Trail

U.S. Corps of Engineers

Dark Mountain Trail

North Carolina

Nonprofit

Dauphin Island Audubon Bird Sanctuary Trail System

Alabama

Backcountry Trail

USDA Forest Service

Deception Falls Nature #1078

Washington

Backcountry Trail

City, Town, or County

Dedham Water Trail

Massachusetts

Backcountry Trail, Water Trail (other)

USDA Forest Service

Deep Creek"Figure 8" Loop

Montana

Backcountry Trail

USDA Forest Service

Deer Mountain-John Mountain Trail

Alaska

Backcountry Trail

Private

DeHart Mountain Trail

Virginia

Backcountry Trail

State

Delaware & Raritan Canal State Park

New Jersey

State

Delaware Canal Heritage Trail

Pennsylvania

Rail Trail

National Park Service

Delaware River Water Trail - Middle Delaware Segment

Pennsylvania

Water Trail (other)

Nonprofit

Delphi Historic Trails

Indiana

Backcountry Trail, Frontcountry Trail, Rail Trail

National Park Service

Derby Wharf

Massachusetts

City, Town, or County

Des Moines River Water Trail - North Section

Iowa

Water Trail (other)

City, Town, or County

Des Moines River Water Trail - South Section

Iowa

Water Trail (other)

City, Town, or County

Des Plaines River Trail - Lake County

Illinois

National Park Service

Desert Ecology Trail

Arizona

Backcountry Trail

State

DeSoto State Park Trail System

Alabama

Backcountry Trail

State

Devil's Den Self-Guided

Arkansas

Backcountry Trail