| Constanta to Montalegre | 1,832.77 mi (2,949.56 km) |
| Constanta to Montemor-o-Novo | 1,930.43 mi (3,106.72 km) |
| Constanta to Montemor-o-Velho | 1,914.20 mi (3,080.61 km) |
| Constanta to Montijo | 1,963.36 mi (3,159.73 km) |
| Constanta to Mortagua | 1,885.55 mi (3,034.50 km) |
| Constanta to Moura | 1,906.83 mi (3,068.74 km) |
| Constanta to Murtosa | 1,898.21 mi (3,054.88 km) |
| Constanta to Nazare | 1,947.33 mi (3,133.93 km) |
| Constanta to Nelas | 1,864.65 mi (3,000.86 km) |
| Constanta to Obidos | 1,958.09 mi (3,151.25 km) |
| Constanta to Odemira | 1,981.35 mi (3,188.67 km) |
| Constanta to Odivelas | 1,974.30 mi (3,177.33 km) |
| Constanta to Oeiras | 1,984.00 mi (3,192.94 km) |
| Constanta to Olhao | 1,958.74 mi (3,152.29 km) |
| Constanta to Oliveira de Azemeis | 1,887.94 mi (3,038.35 km) |
