| Ridge to Noventa Vicentina | 4,067.10 mi (6,545.37 km) |
| Ridge to Novi di Modena | 4,052.82 mi (6,522.38 km) |
| Ridge to Novi Ligure | 3,965.54 mi (6,381.93 km) |
| Ridge to Nuoro | 4,137.63 mi (6,658.87 km) |
| Ridge to Occhiobello | 4,081.12 mi (6,567.93 km) |
| Ridge to Oderzo | 4,091.41 mi (6,584.48 km) |
| Ridge to Oggiono | 3,957.52 mi (6,369.02 km) |
| Ridge to Olbia | 4,124.52 mi (6,637.78 km) |
| Ridge to Oleggio | 3,932.45 mi (6,328.66 km) |
| Ridge to Olgiate Comasco | 3,941.07 mi (6,342.54 km) |
| Ridge to Olgiate Olona | 3,942.18 mi (6,344.32 km) |
| Ridge to Omegna | 3,914.06 mi (6,299.06 km) |
| Ridge to Opera | 3,964.42 mi (6,380.12 km) |
| Ridge to Oppeano | 4,051.59 mi (6,520.40 km) |
| Ridge to Orbassano | 3,903.30 mi (6,281.76 km) |
