| South Portland to Niscemi | 4,280.24 mi (6,888.38 km) |
| South Portland to Nizza Monferrato | 3,734.11 mi (6,009.47 km) |
| South Portland to Noale | 3,865.58 mi (6,221.04 km) |
| South Portland to Nocera Inferiore | 4,150.45 mi (6,679.51 km) |
| South Portland to Nocera Superiore | 4,152.47 mi (6,682.75 km) |
| South Portland to Noceto | 3,810.98 mi (6,133.17 km) |
| South Portland to Noci | 4,256.69 mi (6,850.47 km) |
| South Portland to Noicattaro | 4,241.08 mi (6,825.36 km) |
| South Portland to Nola | 4,139.09 mi (6,661.22 km) |
| South Portland to Nonantola | 3,852.35 mi (6,199.77 km) |
| South Portland to Noto | 4,322.39 mi (6,956.21 km) |
| South Portland to Nova Milanese | 3,743.39 mi (6,024.40 km) |
| South Portland to Novara | 3,722.98 mi (5,991.56 km) |
| South Portland to Novate Milanese | 3,742.21 mi (6,022.50 km) |
| South Portland to Novellara | 3,833.25 mi (6,169.02 km) |
