| Ouistreham to Oria | 1,061.08 mi (1,707.64 km) |
| Ouistreham to Oristano | 779.23 mi (1,254.05 km) |
| Ouistreham to Orta Nova | 947.61 mi (1,525.03 km) |
| Ouistreham to Orte | 767.73 mi (1,235.54 km) |
| Ouistreham to Ortona | 850.63 mi (1,368.95 km) |
| Ouistreham to Orvieto | 745.38 mi (1,199.57 km) |
| Ouistreham to Orzinuovi | 546.65 mi (879.74 km) |
| Ouistreham to Osimo | 765.98 mi (1,232.72 km) |
| Ouistreham to Ospitaletto | 546.62 mi (879.71 km) |
| Ouistreham to Ostuni | 1,048.61 mi (1,687.57 km) |
| Ouistreham to Ottaviano | 922.58 mi (1,484.75 km) |
| Ouistreham to Ovada | 527.73 mi (849.30 km) |
| Ouistreham to Ozieri | 751.20 mi (1,208.94 km) |
| Ouistreham to Paceco | 1,006.80 mi (1,620.29 km) |
| Ouistreham to Pachino | 1,159.88 mi (1,866.65 km) |
