| Arlon to Montemor-o-Novo | 1,028.58 mi (1,655.34 km) |
| Arlon to Montemor-o-Velho | 964.14 mi (1,551.63 km) |
| Arlon to Montijo | 1,049.59 mi (1,689.16 km) |
| Arlon to Mortagua | 934.56 mi (1,504.03 km) |
| Arlon to Moura | 1,032.68 mi (1,661.94 km) |
| Arlon to Murtosa | 933.69 mi (1,502.63 km) |
| Arlon to Nazare | 1,006.88 mi (1,620.42 km) |
| Arlon to Nelas | 916.81 mi (1,475.46 km) |
| Arlon to Obidos | 1,022.67 mi (1,645.83 km) |
| Arlon to Odemira | 1,101.15 mi (1,772.14 km) |
| Arlon to Odivelas | 1,053.39 mi (1,695.27 km) |
| Arlon to Oeiras | 1,063.79 mi (1,712.01 km) |
| Arlon to Olhao | 1,107.93 mi (1,783.04 km) |
| Arlon to Oliveira de Azemeis | 922.64 mi (1,484.84 km) |
| Arlon to Oliveira de Frades | 918.36 mi (1,477.96 km) |
