| Ianca to Montalegre | 1,768.61 mi (2,846.31 km) |
| Ianca to Montemor-o-Novo | 1,873.23 mi (3,014.67 km) |
| Ianca to Montemor-o-Velho | 1,853.22 mi (2,982.47 km) |
| Ianca to Montijo | 1,905.54 mi (3,066.67 km) |
| Ianca to Mortagua | 1,824.27 mi (2,935.87 km) |
| Ianca to Moura | 1,851.48 mi (2,979.66 km) |
| Ianca to Murtosa | 1,836.00 mi (2,954.75 km) |
| Ianca to Nazare | 1,887.34 mi (3,037.39 km) |
| Ianca to Nelas | 1,803.43 mi (2,902.35 km) |
| Ianca to Obidos | 1,898.57 mi (3,055.46 km) |
| Ianca to Odemira | 1,926.23 mi (3,099.97 km) |
| Ianca to Odivelas | 1,916.02 mi (3,083.54 km) |
| Ianca to Oeiras | 1,925.85 mi (3,099.36 km) |
| Ianca to Olhao | 1,905.62 mi (3,066.80 km) |
| Ianca to Oliveira de Azemeis | 1,825.58 mi (2,937.99 km) |
