| Idrija to Nowy Dwor Mazowiecki | 536.68 mi (863.70 km) |
| Idrija to Nowy Sacz | 397.71 mi (640.05 km) |
| Idrija to Nowy Targ | 366.88 mi (590.44 km) |
| Idrija to Nowy Tomysl | 446.47 mi (718.53 km) |
| Idrija to Nysa | 344.14 mi (553.84 km) |
| Idrija to Oborniki | 476.07 mi (766.15 km) |
| Idrija to Oborniki Slaskie | 388.65 mi (625.48 km) |
| Idrija to Olawa | 372.12 mi (598.87 km) |
| Idrija to Olecko | 669.33 mi (1,077.18 km) |
| Idrija to Olesnica | 390.37 mi (628.24 km) |
| Idrija to Olesno | 392.03 mi (630.91 km) |
| Idrija to Olkusz | 390.40 mi (628.29 km) |
| Idrija to Olsztyn | 608.58 mi (979.42 km) |
| Idrija to Opalenica | 448.73 mi (722.16 km) |
| Idrija to Opoczno | 468.06 mi (753.26 km) |
