| Boulogne-Billancourt to Olivenza | 840.66 mi (1,352.91 km) |
| Boulogne-Billancourt to Olot | 459.83 mi (740.03 km) |
| Boulogne-Billancourt to Onate | 458.91 mi (738.54 km) |
| Boulogne-Billancourt to Onda | 625.29 mi (1,006.31 km) |
| Boulogne-Billancourt to Onteniente | 706.11 mi (1,136.37 km) |
| Boulogne-Billancourt to Orihuela | 759.55 mi (1,222.38 km) |
| Boulogne-Billancourt to Osuna | 882.18 mi (1,419.73 km) |
| Boulogne-Billancourt to Ourense | 662.54 mi (1,066.26 km) |
| Boulogne-Billancourt to Oviedo | 540.91 mi (870.51 km) |
| Boulogne-Billancourt to Paiporta | 663.12 mi (1,067.18 km) |
| Boulogne-Billancourt to Pajara | 1,660.02 mi (2,671.54 km) |
| Boulogne-Billancourt to Palafolls | 495.74 mi (797.82 km) |
| Boulogne-Billancourt to Palafrugell | 480.05 mi (772.57 km) |
| Boulogne-Billancourt to Palamos | 484.83 mi (780.26 km) |
| Boulogne-Billancourt to Palencia | 573.82 mi (923.47 km) |
