| Idrija to Borgosatollo | 186.21 mi (299.67 km) |
| Idrija to Borgosesia | 277.84 mi (447.14 km) |
| Idrija to Boscoreale | 362.48 mi (583.36 km) |
| Idrija to Boscotrecase | 361.28 mi (581.43 km) |
| Idrija to Botticino Sera | 185.70 mi (298.86 km) |
| Idrija to Bovalino Marina | 553.48 mi (890.73 km) |
| Idrija to Boves | 335.83 mi (540.47 km) |
| Idrija to Boville Ernica | 302.02 mi (486.06 km) |
| Idrija to Bovisio Masciago | 236.38 mi (380.41 km) |
| Idrija to Bovolone | 149.19 mi (240.09 km) |
| Idrija to Bra | 313.07 mi (503.83 km) |
| Idrija to Bracciano | 284.74 mi (458.25 km) |
| Idrija to Brandizzo | 304.58 mi (490.17 km) |
| Idrija to Breganze | 120.25 mi (193.53 km) |
| Idrija to Brembate | 217.43 mi (349.92 km) |
