| Idrija to Sesimbra | 1,287.36 mi (2,071.81 km) |
| Idrija to Setubal | 1,274.91 mi (2,051.76 km) |
| Idrija to Sever do Vouga | 1,177.64 mi (1,895.23 km) |
| Idrija to Silves | 1,304.62 mi (2,099.59 km) |
| Idrija to Sines | 1,294.47 mi (2,083.24 km) |
| Idrija to Sintra | 1,288.16 mi (2,073.10 km) |
| Idrija to Sobrado de Paiva | 1,164.14 mi (1,873.50 km) |
| Idrija to Sobral de Monte Agraco | 1,269.59 mi (2,043.21 km) |
| Idrija to Soure | 1,211.20 mi (1,949.23 km) |
| Idrija to Tabua | 1,173.06 mi (1,887.86 km) |
| Idrija to Tavira | 1,271.96 mi (2,047.02 km) |
| Idrija to Tomar | 1,215.64 mi (1,956.39 km) |
| Idrija to Tondela | 1,170.79 mi (1,884.20 km) |
| Idrija to Torre de Moncorvo | 1,105.70 mi (1,779.44 km) |
| Idrija to Torres Novas | 1,225.53 mi (1,972.30 km) |
