| Billingham to Montalegre | 932.13 mi (1,500.11 km) |
| Billingham to Montemor-o-Novo | 1,149.56 mi (1,850.04 km) |
| Billingham to Montemor-o-Velho | 1,055.05 mi (1,697.94 km) |
| Billingham to Montijo | 1,156.77 mi (1,861.64 km) |
| Billingham to Mortagua | 1,030.76 mi (1,658.85 km) |
| Billingham to Moura | 1,174.82 mi (1,890.68 km) |
| Billingham to Murtosa | 1,016.80 mi (1,636.39 km) |
| Billingham to Nazare | 1,098.38 mi (1,767.67 km) |
| Billingham to Nelas | 1,019.83 mi (1,641.27 km) |
| Billingham to Obidos | 1,115.78 mi (1,795.68 km) |
| Billingham to Odemira | 1,226.56 mi (1,973.96 km) |
| Billingham to Odivelas | 1,153.76 mi (1,856.80 km) |
| Billingham to Oeiras | 1,162.92 mi (1,871.53 km) |
| Billingham to Olhao | 1,254.13 mi (2,018.32 km) |
| Billingham to Oliveira de Azemeis | 1,007.34 mi (1,621.16 km) |
