| Cangas de Narcea to Orbetello | 899.57 mi (1,447.73 km) |
| Cangas de Narcea to Oria | 1,253.49 mi (2,017.30 km) |
| Cangas de Narcea to Oristano | 813.08 mi (1,308.52 km) |
| Cangas de Narcea to Orta Nova | 1,141.63 mi (1,837.28 km) |
| Cangas de Narcea to Orte | 958.39 mi (1,542.37 km) |
| Cangas de Narcea to Ortona | 1,060.93 mi (1,707.41 km) |
| Cangas de Narcea to Orvieto | 941.79 mi (1,515.66 km) |
| Cangas de Narcea to Orzinuovi | 827.62 mi (1,331.93 km) |
| Cangas de Narcea to Osimo | 1,004.15 mi (1,616.02 km) |
| Cangas de Narcea to Ospitaletto | 835.34 mi (1,344.35 km) |
| Cangas de Narcea to Ostuni | 1,246.50 mi (2,006.05 km) |
| Cangas de Narcea to Ottaviano | 1,087.84 mi (1,750.71 km) |
| Cangas de Narcea to Ovada | 761.57 mi (1,225.63 km) |
| Cangas de Narcea to Ozieri | 817.99 mi (1,316.43 km) |
| Cangas de Narcea to Paceco | 1,061.07 mi (1,707.62 km) |
