| Mons-en-Baroeul to Oria | 988.61 mi (1,591.01 km) |
| Mons-en-Baroeul to Oristano | 787.34 mi (1,267.10 km) |
| Mons-en-Baroeul to Orta Nova | 880.50 mi (1,417.03 km) |
| Mons-en-Baroeul to Orte | 715.39 mi (1,151.31 km) |
| Mons-en-Baroeul to Ortona | 783.29 mi (1,260.59 km) |
| Mons-en-Baroeul to Orvieto | 692.75 mi (1,114.87 km) |
| Mons-en-Baroeul to Orzinuovi | 479.55 mi (771.76 km) |
| Mons-en-Baroeul to Osimo | 693.50 mi (1,116.08 km) |
| Mons-en-Baroeul to Ospitaletto | 475.53 mi (765.29 km) |
| Mons-en-Baroeul to Ostuni | 974.62 mi (1,568.50 km) |
| Mons-en-Baroeul to Ottaviano | 868.41 mi (1,397.57 km) |
| Mons-en-Baroeul to Ovada | 487.70 mi (784.87 km) |
| Mons-en-Baroeul to Ozieri | 750.06 mi (1,207.11 km) |
| Mons-en-Baroeul to Paceco | 989.20 mi (1,591.96 km) |
| Mons-en-Baroeul to Pachino | 1,129.94 mi (1,818.47 km) |
