| Santa Comba to Orbetello | 1,014.70 mi (1,633.01 km) |
| Santa Comba to Oria | 1,368.38 mi (2,202.19 km) |
| Santa Comba to Oristano | 924.88 mi (1,488.45 km) |
| Santa Comba to Orta Nova | 1,256.67 mi (2,022.41 km) |
| Santa Comba to Orte | 1,073.53 mi (1,727.68 km) |
| Santa Comba to Ortona | 1,176.07 mi (1,892.71 km) |
| Santa Comba to Orvieto | 1,056.92 mi (1,700.96 km) |
| Santa Comba to Orzinuovi | 940.32 mi (1,513.30 km) |
| Santa Comba to Osimo | 1,119.00 mi (1,800.85 km) |
| Santa Comba to Ospitaletto | 947.76 mi (1,525.27 km) |
| Santa Comba to Ostuni | 1,361.47 mi (2,191.07 km) |
| Santa Comba to Ottaviano | 1,202.57 mi (1,935.35 km) |
| Santa Comba to Ovada | 875.46 mi (1,408.92 km) |
| Santa Comba to Ozieri | 931.24 mi (1,498.68 km) |
| Santa Comba to Paceco | 1,171.61 mi (1,885.53 km) |
