| Idil to Sesimbra | 2,745.17 mi (4,417.92 km) |
| Idil to Setubal | 2,732.92 mi (4,398.21 km) |
| Idil to Sever do Vouga | 2,670.66 mi (4,298.02 km) |
| Idil to Silves | 2,733.58 mi (4,399.27 km) |
| Idil to Sines | 2,741.64 mi (4,412.25 km) |
| Idil to Sintra | 2,754.00 mi (4,432.14 km) |
| Idil to Sobrado de Paiva | 2,661.37 mi (4,283.07 km) |
| Idil to Sobral de Monte Agraco | 2,737.94 mi (4,406.29 km) |
| Idil to Soure | 2,694.43 mi (4,336.26 km) |
| Idil to Tabua | 2,658.68 mi (4,278.73 km) |
| Idil to Tavira | 2,693.15 mi (4,334.21 km) |
| Idil to Tomar | 2,690.22 mi (4,329.49 km) |
| Idil to Tondela | 2,659.20 mi (4,279.58 km) |
| Idil to Torre de Moncorvo | 2,601.26 mi (4,186.33 km) |
| Idil to Torres Novas | 2,698.39 mi (4,342.64 km) |
