| Ahlen to Montemor-o-Novo | 1,192.83 mi (1,919.67 km) |
| Ahlen to Montemor-o-Velho | 1,124.38 mi (1,809.51 km) |
| Ahlen to Montijo | 1,212.56 mi (1,951.42 km) |
| Ahlen to Mortagua | 1,095.13 mi (1,762.45 km) |
| Ahlen to Moura | 1,198.90 mi (1,929.44 km) |
| Ahlen to Murtosa | 1,092.55 mi (1,758.29 km) |
| Ahlen to Nazare | 1,167.64 mi (1,879.14 km) |
| Ahlen to Nelas | 1,078.02 mi (1,734.90 km) |
| Ahlen to Obidos | 1,183.78 mi (1,905.11 km) |
| Ahlen to Odemira | 1,266.32 mi (2,037.94 km) |
| Ahlen to Odivelas | 1,215.63 mi (1,956.36 km) |
| Ahlen to Oeiras | 1,225.97 mi (1,973.01 km) |
| Ahlen to Olhao | 1,274.86 mi (2,051.70 km) |
| Ahlen to Oliveira de Azemeis | 1,081.58 mi (1,740.63 km) |
| Ahlen to Oliveira de Frades | 1,078.32 mi (1,735.38 km) |
