| Dunstable to Montalegre | 774.60 mi (1,246.60 km) |
| Dunstable to Montemor-o-Novo | 986.79 mi (1,588.08 km) |
| Dunstable to Montemor-o-Velho | 898.10 mi (1,445.35 km) |
| Dunstable to Montijo | 997.46 mi (1,605.25 km) |
| Dunstable to Mortagua | 871.98 mi (1,403.32 km) |
| Dunstable to Moura | 1,007.57 mi (1,621.53 km) |
| Dunstable to Murtosa | 861.12 mi (1,385.84 km) |
| Dunstable to Nazare | 942.08 mi (1,516.13 km) |
| Dunstable to Nelas | 859.13 mi (1,382.64 km) |
| Dunstable to Obidos | 959.37 mi (1,543.96 km) |
| Dunstable to Odemira | 1,063.83 mi (1,712.06 km) |
| Dunstable to Odivelas | 996.11 mi (1,603.09 km) |
| Dunstable to Oeiras | 1,005.73 mi (1,618.57 km) |
| Dunstable to Olhao | 1,086.99 mi (1,749.35 km) |
| Dunstable to Oliveira de Azemeis | 851.04 mi (1,369.62 km) |
