| Petite-Synthe to Oria | 1,031.09 mi (1,659.38 km) |
| Petite-Synthe to Oristano | 824.74 mi (1,327.30 km) |
| Petite-Synthe to Orta Nova | 922.93 mi (1,485.32 km) |
| Petite-Synthe to Orte | 757.34 mi (1,218.82 km) |
| Petite-Synthe to Ortona | 825.70 mi (1,328.84 km) |
| Petite-Synthe to Orvieto | 734.69 mi (1,182.36 km) |
| Petite-Synthe to Orzinuovi | 521.73 mi (839.64 km) |
| Petite-Synthe to Osimo | 735.96 mi (1,184.41 km) |
| Petite-Synthe to Ospitaletto | 517.82 mi (833.35 km) |
| Petite-Synthe to Ostuni | 1,017.10 mi (1,636.87 km) |
| Petite-Synthe to Ottaviano | 910.54 mi (1,465.37 km) |
| Petite-Synthe to Ovada | 528.50 mi (850.54 km) |
| Petite-Synthe to Ozieri | 788.36 mi (1,268.74 km) |
| Petite-Synthe to Paceco | 1,029.39 mi (1,656.65 km) |
| Petite-Synthe to Pachino | 1,171.11 mi (1,884.73 km) |
