| Cobh to Novi di Modena | 999.42 mi (1,608.42 km) |
| Cobh to Novi Ligure | 922.02 mi (1,483.85 km) |
| Cobh to Nuoro | 1,155.77 mi (1,860.03 km) |
| Cobh to Occhiobello | 1,025.48 mi (1,650.35 km) |
| Cobh to Oderzo | 1,029.98 mi (1,657.59 km) |
| Cobh to Oggiono | 902.48 mi (1,452.40 km) |
| Cobh to Olbia | 1,130.40 mi (1,819.20 km) |
| Cobh to Oleggio | 881.27 mi (1,418.27 km) |
| Cobh to Olgiate Comasco | 887.21 mi (1,427.83 km) |
| Cobh to Olgiate Olona | 889.81 mi (1,432.01 km) |
| Cobh to Omegna | 861.30 mi (1,386.12 km) |
| Cobh to Opera | 912.97 mi (1,469.28 km) |
| Cobh to Oppeano | 994.68 mi (1,600.79 km) |
| Cobh to Orbassano | 863.51 mi (1,389.68 km) |
| Cobh to Orbetello | 1,118.27 mi (1,799.68 km) |
