| Middle River to Noventa Vicentina | 4,281.96 mi (6,891.15 km) |
| Middle River to Novi di Modena | 4,267.92 mi (6,868.55 km) |
| Middle River to Novi Ligure | 4,180.97 mi (6,728.62 km) |
| Middle River to Nuoro | 4,353.74 mi (7,006.66 km) |
| Middle River to Occhiobello | 4,296.12 mi (6,913.93 km) |
| Middle River to Oderzo | 4,305.89 mi (6,929.65 km) |
| Middle River to Oggiono | 4,172.51 mi (6,715.01 km) |
| Middle River to Olbia | 4,340.60 mi (6,985.53 km) |
| Middle River to Oleggio | 4,147.60 mi (6,674.92 km) |
| Middle River to Olgiate Comasco | 4,156.11 mi (6,688.61 km) |
| Middle River to Olgiate Olona | 4,157.29 mi (6,690.51 km) |
| Middle River to Omegna | 4,129.14 mi (6,645.20 km) |
| Middle River to Opera | 4,179.58 mi (6,726.38 km) |
| Middle River to Oppeano | 4,266.50 mi (6,866.26 km) |
| Middle River to Orbassano | 4,118.79 mi (6,628.55 km) |
