| Clacton-on-Sea to Montalegre | 806.76 mi (1,298.36 km) |
| Clacton-on-Sea to Montemor-o-Novo | 1,013.99 mi (1,631.85 km) |
| Clacton-on-Sea to Montemor-o-Velho | 929.71 mi (1,496.23 km) |
| Clacton-on-Sea to Montijo | 1,026.96 mi (1,652.74 km) |
| Clacton-on-Sea to Mortagua | 902.59 mi (1,452.59 km) |
| Clacton-on-Sea to Moura | 1,031.34 mi (1,659.78 km) |
| Clacton-on-Sea to Murtosa | 893.77 mi (1,438.38 km) |
| Clacton-on-Sea to Nazare | 973.83 mi (1,567.23 km) |
| Clacton-on-Sea to Nelas | 888.55 mi (1,429.99 km) |
| Clacton-on-Sea to Obidos | 990.95 mi (1,594.77 km) |
| Clacton-on-Sea to Odemira | 1,090.67 mi (1,755.26 km) |
| Clacton-on-Sea to Odivelas | 1,026.70 mi (1,652.32 km) |
| Clacton-on-Sea to Oeiras | 1,036.56 mi (1,668.19 km) |
| Clacton-on-Sea to Olhao | 1,110.47 mi (1,787.14 km) |
| Clacton-on-Sea to Oliveira de Azemeis | 883.38 mi (1,421.66 km) |
