 The road begins near the Peace Arch Border Crossing, and continues eastward for , with gaps around the Pacific Highway and Lynden–Aldergrove Border Crossings.Boundary Road on the US side runs for 1.5 miles along 0 Avenue and again one mile to the west, with many cameras watching the border, before the U.S. road ends at the Lynden–Aldergrove Border Crossing.0 Avenue continues west along the northern border of Peace Arch Historical State Park to Peace Arch Crossing.