| Ianca to Santarem | 1,879.11 mi (3,024.14 km) |
| Ianca to Santiago do Cacem | 1,915.94 mi (3,083.41 km) |
| Ianca to Santo Andre | 1,917.35 mi (3,085.67 km) |
| Ianca to Santo Tirso | 1,812.97 mi (2,917.70 km) |
| Ianca to Sao Bras de Alportel | 1,903.64 mi (3,063.61 km) |
| Ianca to Sao Felix da Marinha | 1,827.92 mi (2,941.75 km) |
| Ianca to Sao Joao da Madeira | 1,824.82 mi (2,936.76 km) |
| Ianca to Sao Joao de Ver | 1,826.41 mi (2,939.33 km) |
| Ianca to Sao Mamede de Infesta | 1,822.70 mi (2,933.35 km) |
| Ianca to Sao Pedro do Sul | 1,808.00 mi (2,909.69 km) |
| Ianca to Satao | 1,792.19 mi (2,884.26 km) |
| Ianca to Seia | 1,798.71 mi (2,894.74 km) |
| Ianca to Senhora da Hora | 1,825.52 mi (2,937.89 km) |
| Ianca to Serpa | 1,864.55 mi (3,000.70 km) |
| Ianca to Serta | 1,834.71 mi (2,952.69 km) |
