| Ballincollig to Novi di Modena | 1,011.99 mi (1,628.64 km) |
| Ballincollig to Novi Ligure | 934.41 mi (1,503.78 km) |
| Ballincollig to Nuoro | 1,167.33 mi (1,878.63 km) |
| Ballincollig to Occhiobello | 1,038.09 mi (1,670.64 km) |
| Ballincollig to Oderzo | 1,042.68 mi (1,678.04 km) |
| Ballincollig to Oggiono | 915.06 mi (1,472.65 km) |
| Ballincollig to Olbia | 1,142.11 mi (1,838.06 km) |
| Ballincollig to Oleggio | 893.78 mi (1,438.40 km) |
| Ballincollig to Olgiate Comasco | 899.77 mi (1,448.04 km) |
| Ballincollig to Olgiate Olona | 902.34 mi (1,452.18 km) |
| Ballincollig to Omegna | 873.83 mi (1,406.30 km) |
| Ballincollig to Opera | 925.49 mi (1,489.43 km) |
| Ballincollig to Oppeano | 1,007.31 mi (1,621.11 km) |
| Ballincollig to Orbassano | 875.81 mi (1,409.47 km) |
| Ballincollig to Orbetello | 1,130.51 mi (1,819.38 km) |
