| Cobh to Oria | 1,455.67 mi (2,342.67 km) |
| Cobh to Oristano | 1,152.65 mi (1,855.00 km) |
| Cobh to Orta Nova | 1,342.32 mi (2,160.25 km) |
| Cobh to Orte | 1,162.02 mi (1,870.09 km) |
| Cobh to Ortona | 1,245.29 mi (2,004.11 km) |
| Cobh to Orvieto | 1,139.75 mi (1,834.24 km) |
| Cobh to Orzinuovi | 940.71 mi (1,513.93 km) |
| Cobh to Osimo | 1,160.21 mi (1,867.17 km) |
| Cobh to Ospitaletto | 940.23 mi (1,513.15 km) |
| Cobh to Ostuni | 1,443.10 mi (2,322.44 km) |
| Cobh to Ottaviano | 1,316.69 mi (2,119.01 km) |
| Cobh to Ovada | 921.83 mi (1,483.53 km) |
| Cobh to Ozieri | 1,130.41 mi (1,819.21 km) |
| Cobh to Paceco | 1,390.10 mi (2,237.15 km) |
| Cobh to Pachino | 1,547.09 mi (2,489.80 km) |
