| Sluis to Montemor-o-Novo | 1,039.58 mi (1,673.03 km) |
| Sluis to Montemor-o-Velho | 962.43 mi (1,548.88 km) |
| Sluis to Montijo | 1,055.81 mi (1,699.16 km) |
| Sluis to Mortagua | 934.11 mi (1,503.31 km) |
| Sluis to Moura | 1,051.81 mi (1,692.73 km) |
| Sluis to Murtosa | 928.33 mi (1,494.00 km) |
| Sluis to Nazare | 1,006.37 mi (1,619.59 km) |
| Sluis to Nelas | 918.48 mi (1,478.15 km) |
| Sluis to Obidos | 1,023.09 mi (1,646.51 km) |
| Sluis to Odemira | 1,115.17 mi (1,794.69 km) |
| Sluis to Odivelas | 1,057.14 mi (1,701.30 km) |
| Sluis to Oeiras | 1,067.28 mi (1,717.62 km) |
| Sluis to Olhao | 1,129.94 mi (1,818.46 km) |
| Sluis to Oliveira de Azemeis | 917.58 mi (1,476.70 km) |
| Sluis to Oliveira de Frades | 916.24 mi (1,474.55 km) |
