| Middelkerke to Montemor-o-Novo | 1,018.10 mi (1,638.47 km) |
| Middelkerke to Montemor-o-Velho | 939.90 mi (1,512.63 km) |
| Middelkerke to Montijo | 1,033.87 mi (1,663.85 km) |
| Middelkerke to Mortagua | 911.73 mi (1,467.28 km) |
| Middelkerke to Moura | 1,031.12 mi (1,659.43 km) |
| Middelkerke to Murtosa | 905.54 mi (1,457.32 km) |
| Middelkerke to Nazare | 983.89 mi (1,583.41 km) |
| Middelkerke to Nelas | 896.30 mi (1,442.46 km) |
| Middelkerke to Obidos | 1,000.68 mi (1,610.43 km) |
| Middelkerke to Odemira | 1,093.89 mi (1,760.45 km) |
| Middelkerke to Odivelas | 1,034.98 mi (1,665.63 km) |
| Middelkerke to Oeiras | 1,045.08 mi (1,681.90 km) |
| Middelkerke to Olhao | 1,109.45 mi (1,785.49 km) |
| Middelkerke to Oliveira de Azemeis | 894.83 mi (1,440.09 km) |
| Middelkerke to Oliveira de Frades | 893.74 mi (1,438.33 km) |
