| Idrija to Roeselare | 604.08 mi (972.18 km) |
| Idrija to Ronse | 579.34 mi (932.36 km) |
| Idrija to Rotselaar | 546.11 mi (878.88 km) |
| Idrija to Rumst | 561.82 mi (904.17 km) |
| Idrija to Saint-Ghislain | 560.78 mi (902.48 km) |
| Idrija to Saint-Nicolas | 504.12 mi (811.31 km) |
| Idrija to Saint-Vith | 468.55 mi (754.06 km) |
| Idrija to Scherpenheuvel | 539.26 mi (867.85 km) |
| Idrija to Schilde | 562.57 mi (905.37 km) |
| Idrija to Schoten | 565.58 mi (910.22 km) |
| Idrija to Seneffe | 547.21 mi (880.65 km) |
| Idrija to Seraing | 503.28 mi (809.95 km) |
| Idrija to Sint-Amandsberg | 584.79 mi (941.12 km) |
| Idrija to Sint-Andries | 610.93 mi (983.20 km) |
| Idrija to Sint-Genesius-Rode | 551.36 mi (887.32 km) |
