| Merzig to Montemor-o-Novo | 1,044.91 mi (1,681.62 km) |
| Merzig to Montemor-o-Velho | 983.55 mi (1,582.87 km) |
| Merzig to Montijo | 1,066.95 mi (1,717.10 km) |
| Merzig to Mortagua | 953.81 mi (1,535.00 km) |
| Merzig to Moura | 1,047.09 mi (1,685.13 km) |
| Merzig to Murtosa | 954.00 mi (1,535.32 km) |
| Merzig to Nazare | 1,025.89 mi (1,651.00 km) |
| Merzig to Nelas | 935.65 mi (1,505.78 km) |
| Merzig to Obidos | 1,041.41 mi (1,676.00 km) |
| Merzig to Odemira | 1,116.56 mi (1,796.93 km) |
| Merzig to Odivelas | 1,071.30 mi (1,724.09 km) |
| Merzig to Oeiras | 1,081.73 mi (1,740.87 km) |
| Merzig to Olhao | 1,121.41 mi (1,804.73 km) |
| Merzig to Oliveira de Azemeis | 942.93 mi (1,517.50 km) |
| Merzig to Oliveira de Frades | 938.03 mi (1,509.62 km) |
