| Dunkirk to Orbetello | 4,368.17 mi (7,029.89 km) |
| Dunkirk to Oria | 4,715.51 mi (7,588.88 km) |
| Dunkirk to Oristano | 4,353.99 mi (7,007.08 km) |
| Dunkirk to Orta Nova | 4,600.93 mi (7,404.49 km) |
| Dunkirk to Orte | 4,416.61 mi (7,107.85 km) |
| Dunkirk to Ortona | 4,504.84 mi (7,249.83 km) |
| Dunkirk to Orvieto | 4,394.93 mi (7,072.95 km) |
| Dunkirk to Orzinuovi | 4,202.54 mi (6,763.33 km) |
| Dunkirk to Osimo | 4,421.67 mi (7,115.99 km) |
| Dunkirk to Ospitaletto | 4,202.52 mi (6,763.31 km) |
| Dunkirk to Ostuni | 4,703.53 mi (7,569.61 km) |
| Dunkirk to Ottaviano | 4,569.18 mi (7,353.38 km) |
| Dunkirk to Ovada | 4,177.41 mi (6,722.89 km) |
| Dunkirk to Ozieri | 4,345.63 mi (6,993.61 km) |
| Dunkirk to Paceco | 4,604.29 mi (7,409.89 km) |
