| Portimao to Niscemi | 1,259.33 mi (2,026.70 km) |
| Portimao to Nizza Monferrato | 1,024.38 mi (1,648.57 km) |
| Portimao to Noale | 1,211.84 mi (1,950.26 km) |
| Portimao to Nocera Inferiore | 1,266.07 mi (2,037.54 km) |
| Portimao to Nocera Superiore | 1,268.06 mi (2,040.75 km) |
| Portimao to Noceto | 1,107.68 mi (1,782.64 km) |
| Portimao to Noci | 1,396.87 mi (2,248.05 km) |
| Portimao to Noicattaro | 1,389.74 mi (2,236.56 km) |
| Portimao to Nola | 1,261.77 mi (2,030.62 km) |
| Portimao to Nonantola | 1,143.54 mi (1,840.35 km) |
| Portimao to Noto | 1,300.01 mi (2,092.17 km) |
| Portimao to Nova Milanese | 1,085.69 mi (1,747.25 km) |
| Portimao to Novara | 1,056.31 mi (1,699.97 km) |
| Portimao to Novate Milanese | 1,081.27 mi (1,740.13 km) |
| Portimao to Novellara | 1,133.57 mi (1,824.30 km) |
