| Merzenich to Montemor-o-Novo | 1,105.50 mi (1,779.13 km) |
| Merzenich to Montemor-o-Velho | 1,037.79 mi (1,670.16 km) |
| Merzenich to Montijo | 1,125.44 mi (1,811.22 km) |
| Merzenich to Mortagua | 1,008.47 mi (1,622.97 km) |
| Merzenich to Moura | 1,111.37 mi (1,788.57 km) |
| Merzenich to Murtosa | 1,006.27 mi (1,619.44 km) |
| Merzenich to Nazare | 1,080.95 mi (1,739.62 km) |
| Merzenich to Nelas | 991.21 mi (1,595.20 km) |
| Merzenich to Obidos | 1,097.02 mi (1,765.48 km) |
| Merzenich to Odemira | 1,178.88 mi (1,897.22 km) |
| Merzenich to Odivelas | 1,128.64 mi (1,816.38 km) |
| Merzenich to Oeiras | 1,139.00 mi (1,833.05 km) |
| Merzenich to Olhao | 1,187.31 mi (1,910.78 km) |
| Merzenich to Oliveira de Azemeis | 995.28 mi (1,601.74 km) |
| Merzenich to Oliveira de Frades | 991.78 mi (1,596.12 km) |
