| Barcelos to Noventa Vicentina | 1,041.45 mi (1,676.05 km) |
| Barcelos to Novi di Modena | 1,007.59 mi (1,621.56 km) |
| Barcelos to Novi Ligure | 903.59 mi (1,454.19 km) |
| Barcelos to Nuoro | 939.15 mi (1,511.42 km) |
| Barcelos to Occhiobello | 1,040.89 mi (1,675.15 km) |
| Barcelos to Oderzo | 1,092.09 mi (1,757.54 km) |
| Barcelos to Oggiono | 942.95 mi (1,517.53 km) |
| Barcelos to Olbia | 940.78 mi (1,514.03 km) |
| Barcelos to Oleggio | 906.49 mi (1,458.86 km) |
| Barcelos to Olgiate Comasco | 924.89 mi (1,488.47 km) |
| Barcelos to Olgiate Olona | 918.79 mi (1,478.65 km) |
| Barcelos to Omegna | 900.08 mi (1,448.54 km) |
| Barcelos to Opera | 931.32 mi (1,498.81 km) |
| Barcelos to Oppeano | 1,024.74 mi (1,649.16 km) |
| Barcelos to Orbassano | 846.15 mi (1,361.74 km) |
