| Heswall to Montalegre | 824.00 mi (1,326.10 km) |
| Heswall to Montemor-o-Novo | 1,042.81 mi (1,678.23 km) |
| Heswall to Montemor-o-Velho | 946.28 mi (1,522.89 km) |
| Heswall to Montijo | 1,048.58 mi (1,687.53 km) |
| Heswall to Mortagua | 922.74 mi (1,485.00 km) |
| Heswall to Moura | 1,070.11 mi (1,722.18 km) |
| Heswall to Murtosa | 907.71 mi (1,460.82 km) |
| Heswall to Nazare | 989.26 mi (1,592.05 km) |
| Heswall to Nelas | 912.61 mi (1,468.70 km) |
| Heswall to Obidos | 1,006.65 mi (1,620.05 km) |
| Heswall to Odemira | 1,119.59 mi (1,801.80 km) |
| Heswall to Odivelas | 1,044.96 mi (1,681.71 km) |
| Heswall to Oeiras | 1,053.94 mi (1,696.15 km) |
| Heswall to Olhao | 1,149.15 mi (1,849.38 km) |
| Heswall to Oliveira de Azemeis | 898.50 mi (1,445.99 km) |
