| Helston to Montalegre | 584.47 mi (940.61 km) |
| Helston to Montemor-o-Novo | 804.22 mi (1,294.27 km) |
| Helston to Montemor-o-Velho | 706.00 mi (1,136.20 km) |
| Helston to Montijo | 808.66 mi (1,301.42 km) |
| Helston to Mortagua | 683.12 mi (1,099.38 km) |
| Helston to Moura | 833.76 mi (1,341.81 km) |
| Helston to Murtosa | 667.23 mi (1,073.81 km) |
| Helston to Nazare | 748.68 mi (1,204.88 km) |
| Helston to Nelas | 673.79 mi (1,084.37 km) |
| Helston to Obidos | 766.06 mi (1,232.85 km) |
| Helston to Odemira | 880.67 mi (1,417.30 km) |
| Helston to Odivelas | 804.57 mi (1,294.84 km) |
| Helston to Oeiras | 813.41 mi (1,309.05 km) |
| Helston to Olhao | 912.30 mi (1,468.21 km) |
| Helston to Oliveira de Azemeis | 658.21 mi (1,059.29 km) |
