| Boussu to Montemor-o-Novo | 1,003.65 mi (1,615.22 km) |
| Boussu to Montemor-o-Velho | 930.73 mi (1,497.87 km) |
| Boussu to Montijo | 1,021.57 mi (1,644.06 km) |
| Boussu to Mortagua | 901.87 mi (1,451.43 km) |
| Boussu to Moura | 1,013.20 mi (1,630.59 km) |
| Boussu to Murtosa | 897.84 mi (1,444.94 km) |
| Boussu to Nazare | 974.37 mi (1,568.09 km) |
| Boussu to Nelas | 885.44 mi (1,424.97 km) |
| Boussu to Obidos | 990.81 mi (1,594.55 km) |
| Boussu to Odemira | 1,078.40 mi (1,735.52 km) |
| Boussu to Odivelas | 1,023.77 mi (1,647.59 km) |
| Boussu to Oeiras | 1,034.02 mi (1,664.10 km) |
| Boussu to Olhao | 1,090.57 mi (1,755.10 km) |
| Boussu to Oliveira de Azemeis | 886.95 mi (1,427.41 km) |
| Boussu to Oliveira de Frades | 884.54 mi (1,423.53 km) |
