| Colonia to Noventa Vicentina | 4,140.80 mi (6,663.97 km) |
| Colonia to Novi di Modena | 4,126.80 mi (6,641.44 km) |
| Colonia to Novi Ligure | 4,039.94 mi (6,501.65 km) |
| Colonia to Nuoro | 4,213.59 mi (6,781.12 km) |
| Colonia to Occhiobello | 4,154.97 mi (6,686.78 km) |
| Colonia to Oderzo | 4,164.70 mi (6,702.43 km) |
| Colonia to Oggiono | 4,031.37 mi (6,487.86 km) |
| Colonia to Olbia | 4,200.27 mi (6,759.69 km) |
| Colonia to Oleggio | 4,006.49 mi (6,447.83 km) |
| Colonia to Olgiate Comasco | 4,014.98 mi (6,461.48 km) |
| Colonia to Olgiate Olona | 4,016.17 mi (6,463.40 km) |
| Colonia to Omegna | 3,988.01 mi (6,418.08 km) |
| Colonia to Opera | 4,038.47 mi (6,499.29 km) |
| Colonia to Oppeano | 4,125.34 mi (6,639.09 km) |
| Colonia to Orbassano | 3,977.79 mi (6,401.63 km) |
