| Kalkara to Octeville | 1,249.18 mi (2,010.37 km) |
| Kalkara to Oignies | 1,159.93 mi (1,866.72 km) |
| Kalkara to Oissel | 1,149.88 mi (1,850.55 km) |
| Kalkara to Olivet | 1,049.11 mi (1,688.38 km) |
| Kalkara to Ollioules | 681.24 mi (1,096.36 km) |
| Kalkara to Olonne-sur-Mer | 1,118.12 mi (1,799.43 km) |
| Kalkara to Oloron-Sainte-Marie | 949.18 mi (1,527.56 km) |
| Kalkara to Onet Village | 858.92 mi (1,382.29 km) |
| Kalkara to Onnaing | 1,140.58 mi (1,835.58 km) |
| Kalkara to Orange | 766.63 mi (1,233.77 km) |
| Kalkara to Orchies | 1,154.11 mi (1,857.37 km) |
| Kalkara to Orleans | 1,050.81 mi (1,691.12 km) |
| Kalkara to Orly | 1,080.29 mi (1,738.56 km) |
| Kalkara to Ormesson-sur-Marne | 1,078.38 mi (1,735.48 km) |
| Kalkara to Orsay | 1,083.81 mi (1,744.22 km) |
