| Whitburn to Montalegre | 987.35 mi (1,588.99 km) |
| Whitburn to Montemor-o-Novo | 1,207.42 mi (1,943.15 km) |
| Whitburn to Montemor-o-Velho | 1,108.04 mi (1,783.22 km) |
| Whitburn to Montijo | 1,210.99 mi (1,948.90 km) |
| Whitburn to Mortagua | 1,085.84 mi (1,747.50 km) |
| Whitburn to Moura | 1,237.25 mi (1,991.16 km) |
| Whitburn to Murtosa | 1,069.05 mi (1,720.48 km) |
| Whitburn to Nazare | 1,150.22 mi (1,851.10 km) |
| Whitburn to Nelas | 1,076.97 mi (1,733.22 km) |
| Whitburn to Obidos | 1,167.54 mi (1,878.98 km) |
| Whitburn to Odemira | 1,283.68 mi (2,065.88 km) |
| Whitburn to Odivelas | 1,206.33 mi (1,941.41 km) |
| Whitburn to Oeiras | 1,214.94 mi (1,955.25 km) |
| Whitburn to Olhao | 1,315.80 mi (2,117.58 km) |
| Whitburn to Oliveira de Azemeis | 1,060.32 mi (1,706.42 km) |
