| Twickenham to Montalegre | 752.35 mi (1,210.80 km) |
| Twickenham to Montemor-o-Novo | 963.01 mi (1,549.81 km) |
| Twickenham to Montemor-o-Velho | 875.74 mi (1,409.37 km) |
| Twickenham to Montijo | 974.43 mi (1,568.19 km) |
| Twickenham to Mortagua | 849.26 mi (1,366.75 km) |
| Twickenham to Moura | 982.77 mi (1,581.62 km) |
| Twickenham to Murtosa | 839.11 mi (1,350.41 km) |
| Twickenham to Nazare | 919.79 mi (1,480.27 km) |
| Twickenham to Nelas | 836.00 mi (1,345.41 km) |
| Twickenham to Obidos | 937.03 mi (1,508.01 km) |
| Twickenham to Odemira | 1,039.97 mi (1,673.68 km) |
| Twickenham to Odivelas | 973.45 mi (1,566.62 km) |
| Twickenham to Oeiras | 983.16 mi (1,582.24 km) |
| Twickenham to Olhao | 1,062.15 mi (1,709.36 km) |
| Twickenham to Oliveira de Azemeis | 828.91 mi (1,334.00 km) |
