| Corum to Orbetello | 1,231.76 mi (1,982.32 km) |
| Corum to Oria | 908.40 mi (1,461.92 km) |
| Corum to Oristano | 1,386.37 mi (2,231.14 km) |
| Corum to Orta Nova | 1,003.91 mi (1,615.64 km) |
| Corum to Orte | 1,171.91 mi (1,886.01 km) |
| Corum to Ortona | 1,069.27 mi (1,720.82 km) |
| Corum to Orvieto | 1,185.68 mi (1,908.17 km) |
| Corum to Orzinuovi | 1,302.88 mi (2,096.78 km) |
| Corum to Osimo | 1,117.61 mi (1,798.62 km) |
| Corum to Ospitaletto | 1,297.32 mi (2,087.83 km) |
| Corum to Ostuni | 909.50 mi (1,463.70 km) |
| Corum to Ottaviano | 1,070.55 mi (1,722.89 km) |
| Corum to Ovada | 1,361.56 mi (2,191.21 km) |
| Corum to Ozieri | 1,357.28 mi (2,184.33 km) |
| Corum to Paceco | 1,208.30 mi (1,944.57 km) |
