| Sidcup to Montalegre | 760.93 mi (1,224.60 km) |
| Sidcup to Montemor-o-Novo | 970.23 mi (1,561.43 km) |
| Sidcup to Montemor-o-Velho | 884.17 mi (1,422.94 km) |
| Sidcup to Montijo | 982.28 mi (1,580.83 km) |
| Sidcup to Mortagua | 857.41 mi (1,379.87 km) |
| Sidcup to Moura | 989.05 mi (1,591.72 km) |
| Sidcup to Murtosa | 847.82 mi (1,364.44 km) |
| Sidcup to Nazare | 928.26 mi (1,493.89 km) |
| Sidcup to Nelas | 843.82 mi (1,358.00 km) |
| Sidcup to Obidos | 945.45 mi (1,521.56 km) |
| Sidcup to Odemira | 1,047.10 mi (1,685.14 km) |
| Sidcup to Odivelas | 981.60 mi (1,579.73 km) |
| Sidcup to Oeiras | 991.37 mi (1,595.46 km) |
| Sidcup to Olhao | 1,068.35 mi (1,719.34 km) |
| Sidcup to Oliveira de Azemeis | 837.54 mi (1,347.89 km) |
