| Idrija to Seysses | 646.66 mi (1,040.70 km) |
| Idrija to Sin-le-Noble | 585.31 mi (941.96 km) |
| Idrija to Six-Fours-les-Plages | 450.81 mi (725.50 km) |
| Idrija to Soissons | 549.19 mi (883.83 km) |
| Idrija to Soisy-sous-Montmorency | 584.30 mi (940.35 km) |
| Idrija to Sollies-Pont | 438.07 mi (705.01 km) |
| Idrija to Somain | 578.57 mi (931.11 km) |
| Idrija to Sorgues | 467.67 mi (752.64 km) |
| Idrija to Sotteville-les-Rouen | 644.91 mi (1,037.89 km) |
| Idrija to Soyaux | 665.55 mi (1,071.09 km) |
| Idrija to Stains | 579.93 mi (933.31 km) |
| Idrija to Stiring-Wendel | 397.45 mi (639.63 km) |
| Idrija to Strasbourg | 344.01 mi (553.63 km) |
| Idrija to Sucy-en-Brie | 570.46 mi (918.06 km) |
| Idrija to Suresnes | 585.57 mi (942.39 km) |
