| Cassa de la Selva to Orbetello | 428.55 mi (689.68 km) |
| Cassa de la Selva to Oria | 772.34 mi (1,242.97 km) |
| Cassa de la Selva to Oristano | 328.45 mi (528.60 km) |
| Cassa de la Selva to Orta Nova | 663.67 mi (1,068.07 km) |
| Cassa de la Selva to Orte | 488.39 mi (785.99 km) |
| Cassa de la Selva to Ortona | 591.10 mi (951.28 km) |
| Cassa de la Selva to Orvieto | 475.19 mi (764.74 km) |
| Cassa de la Selva to Orzinuovi | 428.00 mi (688.80 km) |
| Cassa de la Selva to Osimo | 549.56 mi (884.43 km) |
| Cassa de la Selva to Ospitaletto | 439.47 mi (707.26 km) |
| Cassa de la Selva to Ostuni | 766.59 mi (1,233.71 km) |
| Cassa de la Selva to Ottaviano | 605.45 mi (974.38 km) |
| Cassa de la Selva to Ovada | 346.92 mi (558.31 km) |
| Cassa de la Selva to Ozieri | 330.87 mi (532.49 km) |
| Cassa de la Selva to Paceco | 578.81 mi (931.51 km) |
