| Alcantarilla to Orbetello | 723.56 mi (1,164.46 km) |
| Alcantarilla to Oria | 1,021.35 mi (1,643.71 km) |
| Alcantarilla to Oristano | 543.08 mi (874.01 km) |
| Alcantarilla to Orta Nova | 927.90 mi (1,493.31 km) |
| Alcantarilla to Orte | 780.29 mi (1,255.75 km) |
| Alcantarilla to Ortona | 876.39 mi (1,410.41 km) |
| Alcantarilla to Orvieto | 773.11 mi (1,244.20 km) |
| Alcantarilla to Orzinuovi | 769.37 mi (1,238.18 km) |
| Alcantarilla to Osimo | 856.73 mi (1,378.77 km) |
| Alcantarilla to Ospitaletto | 781.32 mi (1,257.41 km) |
| Alcantarilla to Ostuni | 1,019.92 mi (1,641.41 km) |
| Alcantarilla to Ottaviano | 859.39 mi (1,383.06 km) |
| Alcantarilla to Ovada | 687.47 mi (1,106.37 km) |
| Alcantarilla to Ozieri | 574.86 mi (925.14 km) |
| Alcantarilla to Paceco | 748.69 mi (1,204.90 km) |
