| Nailsea to Montalegre | 704.98 mi (1,134.55 km) |
| Nailsea to Montemor-o-Novo | 921.67 mi (1,483.28 km) |
| Nailsea to Montemor-o-Velho | 828.19 mi (1,332.85 km) |
| Nailsea to Montijo | 929.48 mi (1,495.85 km) |
| Nailsea to Mortagua | 803.46 mi (1,293.05 km) |
| Nailsea to Moura | 946.56 mi (1,523.34 km) |
| Nailsea to Murtosa | 790.22 mi (1,271.73 km) |
| Nailsea to Nazare | 871.73 mi (1,402.92 km) |
| Nailsea to Nelas | 792.17 mi (1,274.87 km) |
| Nailsea to Obidos | 889.13 mi (1,430.91 km) |
| Nailsea to Odemira | 998.71 mi (1,607.27 km) |
| Nailsea to Odivelas | 926.84 mi (1,491.60 km) |
| Nailsea to Oeiras | 936.11 mi (1,506.53 km) |
| Nailsea to Olhao | 1,025.88 mi (1,651.00 km) |
| Nailsea to Oliveira de Azemeis | 780.59 mi (1,256.23 km) |
