| Houghton le Spring to Montalegre | 944.24 mi (1,519.61 km) |
| Houghton le Spring to Montemor-o-Novo | 1,162.11 mi (1,870.24 km) |
| Houghton le Spring to Montemor-o-Velho | 1,066.99 mi (1,717.16 km) |
| Houghton le Spring to Montijo | 1,168.91 mi (1,881.18 km) |
| Houghton le Spring to Mortagua | 1,042.93 mi (1,678.43 km) |
| Houghton le Spring to Moura | 1,187.88 mi (1,911.71 km) |
| Houghton le Spring to Murtosa | 1,028.64 mi (1,655.43 km) |
| Houghton le Spring to Nazare | 1,110.21 mi (1,786.72 km) |
| Houghton le Spring to Nelas | 1,032.23 mi (1,661.21 km) |
| Houghton le Spring to Obidos | 1,127.62 mi (1,814.73 km) |
| Houghton le Spring to Odemira | 1,239.06 mi (1,994.08 km) |
| Houghton le Spring to Odivelas | 1,165.71 mi (1,876.03 km) |
| Houghton le Spring to Oeiras | 1,174.81 mi (1,890.67 km) |
| Houghton le Spring to Olhao | 1,267.14 mi (2,039.27 km) |
| Houghton le Spring to Oliveira de Azemeis | 1,019.25 mi (1,640.33 km) |
