| Idrija to Barberino di Mugello | 194.07 mi (312.33 km) |
| Idrija to Barcellona-Pozzo di Gotto | 545.95 mi (878.63 km) |
| Idrija to Bareggio | 246.02 mi (395.93 km) |
| Idrija to Barga | 218.38 mi (351.45 km) |
| Idrija to Bari | 365.67 mi (588.49 km) |
| Idrija to Barletta | 342.79 mi (551.67 km) |
| Idrija to Baronissi | 365.08 mi (587.54 km) |
| Idrija to Barrafranca | 596.74 mi (960.36 km) |
| Idrija to Bassano del Grappa | 111.49 mi (179.43 km) |
| Idrija to Battipaglia | 375.20 mi (603.83 km) |
| Idrija to Beinasco | 319.28 mi (513.83 km) |
| Idrija to Bellinzago Novarese | 261.43 mi (420.73 km) |
| Idrija to Belluno | 87.32 mi (140.52 km) |
| Idrija to Belmonte Mezzagno | 550.45 mi (885.87 km) |
| Idrija to Belpasso | 583.78 mi (939.50 km) |
