| Bolton to Montalegre | 848.99 mi (1,366.32 km) |
| Bolton to Montemor-o-Novo | 1,067.15 mi (1,717.40 km) |
| Bolton to Montemor-o-Velho | 971.65 mi (1,563.72 km) |
| Bolton to Montijo | 1,073.66 mi (1,727.89 km) |
| Bolton to Mortagua | 947.70 mi (1,525.18 km) |
| Bolton to Moura | 1,093.45 mi (1,759.74 km) |
| Bolton to Murtosa | 933.25 mi (1,501.92 km) |
| Bolton to Nazare | 1,014.82 mi (1,633.20 km) |
| Bolton to Nelas | 937.16 mi (1,508.21 km) |
| Bolton to Obidos | 1,032.23 mi (1,661.21 km) |
| Bolton to Odemira | 1,144.05 mi (1,841.17 km) |
| Bolton to Odivelas | 1,070.36 mi (1,722.58 km) |
| Bolton to Oeiras | 1,079.44 mi (1,737.19 km) |
| Bolton to Olhao | 1,172.64 mi (1,887.18 km) |
| Bolton to Oliveira de Azemeis | 923.90 mi (1,486.87 km) |
