City, Town, or County

The Los Angeles River Trail (Greenway/Bike Path)

California

Frontcountry Trail, Urban Trail

State

The Palouse to Cascades State Park Trail

Washington

Backcountry Trail, Rail Trail, Urban Trail

Nonprofit

The Rivanna Trail

Virginia

City, Town, or County

The Tanglefoot Trail

Mississippi

Rail Trail

State

The Wehle Forever Wild Trail System

Alabama

Backcountry Trail

State

Third Creek Bicycle Trail

Tennessee

Frontcountry Trail, Urban Trail

U.S. Corps of Engineers

Three Hickories Nature Trail

Tennessee

Backcountry Trail

Nonprofit

Three Rivers Greenway

South Carolina

Frontcountry Trail

Nonprofit

Three Rivers Heritage Trail

Pennsylvania

Frontcountry Trail, Rail Trail, Urban Trail

City, Town, or County

Three Rivers Trail

Iowa

Backcountry Trail, Frontcountry Trail, Rail Trail

Nonprofit

Three Rivers Water Trail

Pennsylvania

Water Trail (other)

National Park Service

Three Senses

Wyoming