| Royal Leamington Spa to Oswego (Illinois) | 3,905.30 mi (6,284.97 km) |
| Royal Leamington Spa to Oswego (New York) | 3,368.58 mi (5,421.20 km) |
| Royal Leamington Spa to Otsego (Minnesota) | 3,930.18 mi (6,325.01 km) |
| Royal Leamington Spa to Ottawa (Illinois) | 3,939.25 mi (6,339.61 km) |
| Royal Leamington Spa to Ottawa (Kansas) | 4,314.97 mi (6,944.27 km) |
| Royal Leamington Spa to Ottumwa (Iowa) | 4,089.89 mi (6,582.05 km) |
| Royal Leamington Spa to Overland (Missouri) | 4,125.69 mi (6,639.66 km) |
| Royal Leamington Spa to Overland Park (Kansas) | 4,279.15 mi (6,886.63 km) |
| Royal Leamington Spa to Overlea (Maryland) | 3,549.15 mi (5,711.81 km) |
| Royal Leamington Spa to Oviedo (Florida) | 4,255.18 mi (6,848.06 km) |
| Royal Leamington Spa to Owasso (Oklahoma) | 4,453.00 mi (7,166.41 km) |
| Royal Leamington Spa to Owatonna (Minnesota) | 3,971.98 mi (6,392.29 km) |
| Royal Leamington Spa to Owensboro (Kentucky) | 4,045.68 mi (6,510.90 km) |
| Royal Leamington Spa to Owings Mills (Maryland) | 3,558.07 mi (5,726.16 km) |
| Royal Leamington Spa to Owosso (Michigan) | 3,686.62 mi (5,933.05 km) |
