| Idrija to Bitonto | 362.76 mi (583.81 km) |
| Idrija to Bitritto | 369.87 mi (595.24 km) |
| Idrija to Bollate | 238.67 mi (384.10 km) |
| Idrija to Bologna | 167.08 mi (268.88 km) |
| Idrija to Bolzano | 132.20 mi (212.76 km) |
| Idrija to Bomporto | 169.73 mi (273.16 km) |
| Idrija to Bonate di Sopra | 215.81 mi (347.31 km) |
| Idrija to Bondeno | 148.31 mi (238.68 km) |
| Idrija to Bordighera | 346.91 mi (558.30 km) |
| Idrija to Borgaro Torinese | 313.91 mi (505.20 km) |
| Idrija to Borgo a Buggiano | 217.67 mi (350.30 km) |
| Idrija to Borgo San Dalmazzo | 338.88 mi (545.38 km) |
| Idrija to Borgo San Lorenzo | 191.85 mi (308.75 km) |
| Idrija to Borgomanero | 268.37 mi (431.91 km) |
| Idrija to Borgoricco | 104.85 mi (168.74 km) |
