| Naples to Montemor-o-Novo | 1,199.76 mi (1,930.83 km) |
| Naples to Montemor-o-Velho | 1,202.33 mi (1,934.97 km) |
| Naples to Montijo | 1,234.92 mi (1,987.40 km) |
| Naples to Mortagua | 1,175.98 mi (1,892.56 km) |
| Naples to Moura | 1,169.03 mi (1,881.37 km) |
| Naples to Murtosa | 1,193.77 mi (1,921.19 km) |
| Naples to Nazare | 1,229.51 mi (1,978.70 km) |
| Naples to Nelas | 1,155.21 mi (1,859.12 km) |
| Naples to Obidos | 1,237.70 mi (1,991.88 km) |
| Naples to Odemira | 1,241.80 mi (1,998.49 km) |
| Naples to Odivelas | 1,247.73 mi (2,008.03 km) |
| Naples to Oeiras | 1,256.70 mi (2,022.46 km) |
| Naples to Olhao | 1,212.67 mi (1,951.60 km) |
| Naples to Oliveira de Azemeis | 1,184.58 mi (1,906.40 km) |
| Naples to Oliveira de Frades | 1,170.58 mi (1,883.87 km) |
