| Arruda dos Vinhos to Orbetello | 1,085.77 mi (1,747.38 km) |
| Arruda dos Vinhos to Oria | 1,416.97 mi (2,280.39 km) |
| Arruda dos Vinhos to Oristano | 942.80 mi (1,517.29 km) |
| Arruda dos Vinhos to Orta Nova | 1,313.93 mi (2,114.56 km) |
| Arruda dos Vinhos to Orte | 1,145.48 mi (1,843.47 km) |
| Arruda dos Vinhos to Ortona | 1,247.47 mi (2,007.62 km) |
| Arruda dos Vinhos to Orvieto | 1,133.20 mi (1,823.71 km) |
| Arruda dos Vinhos to Orzinuovi | 1,065.47 mi (1,714.71 km) |
| Arruda dos Vinhos to Osimo | 1,208.09 mi (1,944.24 km) |
| Arruda dos Vinhos to Ospitaletto | 1,075.24 mi (1,730.43 km) |
| Arruda dos Vinhos to Ostuni | 1,413.19 mi (2,274.30 km) |
| Arruda dos Vinhos to Ottaviano | 1,250.53 mi (2,012.53 km) |
| Arruda dos Vinhos to Ovada | 989.73 mi (1,592.81 km) |
| Arruda dos Vinhos to Ozieri | 964.07 mi (1,551.53 km) |
| Arruda dos Vinhos to Paceco | 1,168.45 mi (1,880.43 km) |
