| Boulogne-Billancourt to Novi di Modena | 491.01 mi (790.20 km) |
| Boulogne-Billancourt to Novi Ligure | 418.22 mi (673.06 km) |
| Boulogne-Billancourt to Nuoro | 683.60 mi (1,100.14 km) |
| Boulogne-Billancourt to Occhiobello | 516.86 mi (831.81 km) |
| Boulogne-Billancourt to Oderzo | 524.06 mi (843.39 km) |
| Boulogne-Billancourt to Oggiono | 393.94 mi (633.99 km) |
| Boulogne-Billancourt to Olbia | 651.75 mi (1,048.89 km) |
| Boulogne-Billancourt to Oleggio | 373.90 mi (601.74 km) |
| Boulogne-Billancourt to Olgiate Comasco | 378.92 mi (609.81 km) |
| Boulogne-Billancourt to Olgiate Olona | 381.94 mi (614.68 km) |
| Boulogne-Billancourt to Omegna | 353.43 mi (568.79 km) |
| Boulogne-Billancourt to Opera | 405.31 mi (652.28 km) |
| Boulogne-Billancourt to Oppeano | 486.14 mi (782.36 km) |
| Boulogne-Billancourt to Orbassano | 363.71 mi (585.34 km) |
| Boulogne-Billancourt to Orbetello | 618.17 mi (994.84 km) |
