| Marinha Grande to Noventa Vicentina | 1,106.48 mi (1,780.71 km) |
| Marinha Grande to Novi di Modena | 1,070.47 mi (1,722.75 km) |
| Marinha Grande to Novi Ligure | 967.53 mi (1,557.08 km) |
| Marinha Grande to Nuoro | 965.43 mi (1,553.71 km) |
| Marinha Grande to Occhiobello | 1,103.43 mi (1,775.79 km) |
| Marinha Grande to Oderzo | 1,159.54 mi (1,866.10 km) |
| Marinha Grande to Oggiono | 1,013.71 mi (1,631.41 km) |
| Marinha Grande to Olbia | 972.40 mi (1,564.92 km) |
| Marinha Grande to Oleggio | 976.90 mi (1,572.17 km) |
| Marinha Grande to Olgiate Comasco | 996.15 mi (1,603.15 km) |
| Marinha Grande to Olgiate Olona | 989.10 mi (1,591.80 km) |
| Marinha Grande to Omegna | 972.80 mi (1,565.57 km) |
| Marinha Grande to Opera | 999.41 mi (1,608.39 km) |
| Marinha Grande to Oppeano | 1,090.18 mi (1,754.48 km) |
| Marinha Grande to Orbassano | 913.60 mi (1,470.29 km) |
