399th Avenue in Lone Tree Township, South Dakota

399th Avenue in Charles Mix County is a track. It runs in a north-south direction and crosses 288th Street, 290th Street, 291st Street, 292nd Street, 293rd Street, 294th Street, 295th Street, 296th Street, SD Highway 46 and 298th Street. It ends in a cul-de-sac and connects Choteau Creek Township and Lone Tree Township. 399th Avenue also exists in Rouse Township.