| Royston to Oswego (Illinois) | 3,970.21 mi (6,389.44 km) |
| Royston to Oswego (New York) | 3,434.55 mi (5,527.37 km) |
| Royston to Otsego (Minnesota) | 3,993.16 mi (6,426.37 km) |
| Royston to Ottawa (Illinois) | 4,004.16 mi (6,444.07 km) |
| Royston to Ottawa (Kansas) | 4,379.40 mi (7,047.97 km) |
| Royston to Ottumwa (Iowa) | 4,154.29 mi (6,685.68 km) |
| Royston to Overland (Missouri) | 4,190.90 mi (6,744.61 km) |
| Royston to Overland Park (Kansas) | 4,343.63 mi (6,990.39 km) |
| Royston to Overlea (Maryland) | 3,615.53 mi (5,818.64 km) |
| Royston to Oviedo (Florida) | 4,321.55 mi (6,954.87 km) |
| Royston to Owasso (Oklahoma) | 4,517.81 mi (7,270.71 km) |
| Royston to Owatonna (Minnesota) | 4,035.40 mi (6,494.36 km) |
| Royston to Owensboro (Kentucky) | 4,111.45 mi (6,616.75 km) |
| Royston to Owings Mills (Maryland) | 3,624.44 mi (5,832.96 km) |
| Royston to Owosso (Michigan) | 3,751.85 mi (6,038.01 km) |
