| Piran to Montalegre | 1,094.12 mi (1,760.82 km) |
| Piran to Montemor-o-Novo | 1,208.97 mi (1,945.65 km) |
| Piran to Montemor-o-Velho | 1,181.97 mi (1,902.20 km) |
| Piran to Montijo | 1,239.78 mi (1,995.23 km) |
| Piran to Mortagua | 1,152.66 mi (1,855.03 km) |
| Piran to Moura | 1,191.87 mi (1,918.12 km) |
| Piran to Murtosa | 1,163.18 mi (1,871.96 km) |
| Piran to Nazare | 1,217.56 mi (1,959.47 km) |
| Piran to Nelas | 1,131.97 mi (1,821.72 km) |
| Piran to Obidos | 1,229.55 mi (1,978.78 km) |
| Piran to Odemira | 1,266.73 mi (2,038.61 km) |
| Piran to Odivelas | 1,249.28 mi (2,010.52 km) |
| Piran to Oeiras | 1,259.33 mi (2,026.70 km) |
| Piran to Olhao | 1,251.85 mi (2,014.66 km) |
| Piran to Oliveira de Azemeis | 1,152.63 mi (1,854.98 km) |
