| Merchtem to Montemor-o-Novo | 1,044.14 mi (1,680.39 km) |
| Merchtem to Montemor-o-Velho | 970.34 mi (1,561.62 km) |
| Merchtem to Montijo | 1,061.75 mi (1,708.72 km) |
| Merchtem to Mortagua | 941.60 mi (1,515.36 km) |
| Merchtem to Moura | 1,054.13 mi (1,696.46 km) |
| Merchtem to Murtosa | 937.16 mi (1,508.21 km) |
| Merchtem to Nazare | 1,014.06 mi (1,631.97 km) |
| Merchtem to Nelas | 925.33 mi (1,489.18 km) |
| Merchtem to Obidos | 1,030.57 mi (1,658.54 km) |
| Merchtem to Odemira | 1,119.05 mi (1,800.94 km) |
| Merchtem to Odivelas | 1,063.77 mi (1,711.97 km) |
| Merchtem to Oeiras | 1,074.00 mi (1,728.44 km) |
| Merchtem to Olhao | 1,131.61 mi (1,821.15 km) |
| Merchtem to Oliveira de Azemeis | 926.30 mi (1,490.73 km) |
| Merchtem to Oliveira de Frades | 924.14 mi (1,487.26 km) |
