| Killingworth to Octeville | 373.46 mi (601.03 km) |
| Killingworth to Oignies | 368.03 mi (592.29 km) |
| Killingworth to Oissel | 408.74 mi (657.80 km) |
| Killingworth to Olivet | 516.97 mi (831.98 km) |
| Killingworth to Ollioules | 886.15 mi (1,426.13 km) |
| Killingworth to Olonne-sur-Mer | 587.07 mi (944.80 km) |
| Killingworth to Oloron-Sainte-Marie | 819.00 mi (1,318.06 km) |
| Killingworth to Onet Village | 759.59 mi (1,222.44 km) |
| Killingworth to Onnaing | 386.42 mi (621.89 km) |
| Killingworth to Orange | 804.05 mi (1,294.00 km) |
| Killingworth to Orchies | 373.21 mi (600.62 km) |
| Killingworth to Orleans | 514.50 mi (828.01 km) |
| Killingworth to Orly | 465.75 mi (749.56 km) |
| Killingworth to Ormesson-sur-Marne | 465.30 mi (748.83 km) |
| Killingworth to Orsay | 465.68 mi (749.44 km) |
