| Idrija to Belvedere Marittimo | 450.92 mi (725.69 km) |
| Idrija to Benevento | 338.55 mi (544.84 km) |
| Idrija to Bergamo | 210.76 mi (339.19 km) |
| Idrija to Bernalda | 408.39 mi (657.24 km) |
| Idrija to Bertinoro | 157.86 mi (254.06 km) |
| Idrija to Besana in Brianza | 229.24 mi (368.92 km) |
| Idrija to Besozzo | 257.81 mi (414.90 km) |
| Idrija to Biancavilla | 578.71 mi (931.34 km) |
| Idrija to Biassono | 230.63 mi (371.16 km) |
| Idrija to Bibbiano | 196.01 mi (315.44 km) |
| Idrija to Bibbiena | 192.43 mi (309.68 km) |
| Idrija to Biella | 288.71 mi (464.64 km) |
| Idrija to Bisceglie | 351.37 mi (565.48 km) |
| Idrija to Bisignano | 462.45 mi (744.24 km) |
| Idrija to Bitetto | 369.38 mi (594.46 km) |
