| Split to Oswego (Illinois) | 4,930.18 mi (7,934.35 km) |
| Split to Oswego (New York) | 4,386.14 mi (7,058.81 km) |
| Split to Otsego (Minnesota) | 4,953.96 mi (7,972.63 km) |
| Split to Ottawa (Illinois) | 4,964.13 mi (7,989.00 km) |
| Split to Ottawa (Kansas) | 5,340.62 mi (8,594.90 km) |
| Split to Ottumwa (Iowa) | 5,115.57 mi (8,232.72 km) |
| Split to Overland (Missouri) | 5,149.46 mi (8,287.26 km) |
| Split to Overland Park (Kansas) | 5,304.77 mi (8,537.20 km) |
| Split to Overlea (Maryland) | 4,555.82 mi (7,331.89 km) |
| Split to Oviedo (Florida) | 5,235.61 mi (8,425.91 km) |
| Split to Owasso (Oklahoma) | 5,478.09 mi (8,816.14 km) |
| Split to Owatonna (Minnesota) | 4,996.83 mi (8,041.62 km) |
| Split to Owensboro (Kentucky) | 5,065.37 mi (8,151.93 km) |
| Split to Owings Mills (Maryland) | 4,565.42 mi (7,347.33 km) |
| Split to Owosso (Michigan) | 4,710.41 mi (7,580.67 km) |
