| Idrija to Bailey's Crossroads (Virginia) | 4,413.50 mi (7,102.84 km) |
| Idrija to Bainbridge (Georgia) | 5,093.48 mi (8,197.16 km) |
| Idrija to Bainbridge Island (Washington) | 5,454.68 mi (8,778.46 km) |
| Idrija to Baker (Louisiana) | 5,383.40 mi (8,663.75 km) |
| Idrija to Bakersfield (California) | 6,102.00 mi (9,820.22 km) |
| Idrija to Balch Springs (Texas) | 5,490.60 mi (8,836.26 km) |
| Idrija to Baldwin (New York) | 4,189.43 mi (6,742.23 km) |
| Idrija to Baldwin (Pennsylvania) | 4,462.81 mi (7,182.20 km) |
| Idrija to Baldwin Park (California) | 6,146.45 mi (9,891.75 km) |
| Idrija to Ballenger Creek (Maryland) | 4,402.22 mi (7,084.69 km) |
| Idrija to Ballwin (Missouri) | 4,961.84 mi (7,985.31 km) |
| Idrija to Baltimore (Maryland) | 4,372.08 mi (7,036.18 km) |
| Idrija to Bangor (Maine) | 3,823.33 mi (6,153.05 km) |
| Idrija to Banning (California) | 6,122.53 mi (9,853.25 km) |
| Idrija to Baraboo (Wisconsin) | 4,696.87 mi (7,558.88 km) |
