U.S. Corps of Engineers
North Slope Trail
California
Backcountry Trail
USDA Forest Service
North Umpqua Trail - Maidu Lake Segment
Oregon
North Umpqua Trail - Mott Section
Backcountry Trail, Frontcountry Trail
Bureau of Land Management
North Umpqua Trail - Tioga Segment
State
North Western State Trail
Michigan
Rail Trail
Northern Delaware Greenway Trail - Brandywine Creek
Delaware
Northern Delaware Greenway Trail - Wilmington
Backcountry Trail, Urban Trail
Private
Northfield Mountain Trail System
Massachusetts
Northshore Trail
Texas
City, Town, or County
Northwest Greenway Trail
Indiana
Urban Trail
Oak Creek Trail
Nebraska
Oak Leaf Trail - Lake Loop
Wisconsin
Oak Leaf Trail - Warnimont Park
Oak Mountain Red Trail
Alabama
Oakdale Park Nature Trail
Minnesota
U.S. Fish and Wildlife Service
Oaks to Wetlands Trail
Washington
Obey River Canoe Trail
Tennessee
Water Trail (other)
Observatory Trail
Ocala Trail
Florida
Occoquan Water Trail
Virginia
Frontcountry Trail, Water Trail (other)
