| Perth to Oswego (Illinois) | 3,717.28 mi (5,982.39 km) |
| Perth to Oswego (New York) | 3,204.80 mi (5,157.63 km) |
| Perth to Otsego (Minnesota) | 3,718.26 mi (5,983.96 km) |
| Perth to Ottawa (Illinois) | 3,751.10 mi (6,036.81 km) |
| Perth to Ottawa (Kansas) | 4,119.04 mi (6,628.96 km) |
| Perth to Ottumwa (Iowa) | 3,893.84 mi (6,266.53 km) |
| Perth to Overland (Missouri) | 3,942.25 mi (6,344.44 km) |
| Perth to Overland Park (Kansas) | 4,083.86 mi (6,572.33 km) |
| Perth to Overlea (Maryland) | 3,402.87 mi (5,476.40 km) |
| Perth to Oviedo (Florida) | 4,134.41 mi (6,653.69 km) |
| Perth to Owasso (Oklahoma) | 4,262.24 mi (6,859.42 km) |
| Perth to Owatonna (Minnesota) | 3,764.52 mi (6,058.40 km) |
| Perth to Owensboro (Kentucky) | 3,874.31 mi (6,235.09 km) |
| Perth to Owings Mills (Maryland) | 3,410.75 mi (5,489.08 km) |
| Perth to Owosso (Michigan) | 3,504.49 mi (5,639.94 km) |
