| Ianca to Arcos de Valdevez | 1,798.48 mi (2,894.37 km) |
| Ianca to Arcozelo | 1,828.19 mi (2,942.18 km) |
| Ianca to Arganil | 1,821.20 mi (2,930.94 km) |
| Ianca to Arouca | 1,812.03 mi (2,916.18 km) |
| Ianca to Arruda dos Vinhos | 1,904.88 mi (3,065.60 km) |
| Ianca to Aveiro | 1,839.37 mi (2,960.18 km) |
| Ianca to Aver-o-Mar | 1,825.95 mi (2,938.58 km) |
| Ianca to Aves | 1,802.30 mi (2,900.52 km) |
| Ianca to Azambuja | 1,892.71 mi (3,046.03 km) |
| Ianca to Baiao | 1,795.97 mi (2,890.33 km) |
| Ianca to Barcelos | 1,815.85 mi (2,922.33 km) |
| Ianca to Barreiro | 1,914.16 mi (3,080.54 km) |
| Ianca to Batalha | 1,872.96 mi (3,014.24 km) |
| Ianca to Beja | 1,875.65 mi (3,018.57 km) |
| Ianca to Belas | 1,920.94 mi (3,091.45 km) |
