| Bois-Guillaume to Oria | 1,013.81 mi (1,631.57 km) |
| Bois-Guillaume to Oristano | 755.04 mi (1,215.12 km) |
| Bois-Guillaume to Orta Nova | 901.43 mi (1,450.71 km) |
| Bois-Guillaume to Orte | 724.80 mi (1,166.45 km) |
| Bois-Guillaume to Ortona | 804.04 mi (1,293.99 km) |
| Bois-Guillaume to Orvieto | 702.25 mi (1,130.16 km) |
| Bois-Guillaume to Orzinuovi | 498.26 mi (801.87 km) |
| Bois-Guillaume to Osimo | 717.71 mi (1,155.05 km) |
| Bois-Guillaume to Ospitaletto | 497.25 mi (800.25 km) |
| Bois-Guillaume to Ostuni | 1,000.92 mi (1,610.82 km) |
| Bois-Guillaume to Ottaviano | 879.81 mi (1,415.92 km) |
| Bois-Guillaume to Ovada | 486.33 mi (782.68 km) |
| Bois-Guillaume to Ozieri | 723.73 mi (1,164.73 km) |
| Bois-Guillaume to Paceco | 975.20 mi (1,569.43 km) |
| Bois-Guillaume to Pachino | 1,124.90 mi (1,810.35 km) |
