| Idrija to Barberton (Ohio) | 4,499.85 mi (7,241.81 km) |
| Idrija to Bardstown (Kentucky) | 4,799.99 mi (7,724.84 km) |
| Idrija to Barrington (Illinois) | 4,699.54 mi (7,563.18 km) |
| Idrija to Barstow (California) | 6,072.82 mi (9,773.26 km) |
| Idrija to Bartlesville (Oklahoma) | 5,258.38 mi (8,462.55 km) |
| Idrija to Bartlett (Illinois) | 4,710.56 mi (7,580.92 km) |
| Idrija to Bartlett (Tennessee) | 5,098.13 mi (8,204.64 km) |
| Idrija to Bartow (Florida) | 5,120.05 mi (8,239.92 km) |
| Idrija to Batavia (Illinois) | 4,720.71 mi (7,597.25 km) |
| Idrija to Batavia (New York) | 4,276.81 mi (6,882.86 km) |
| Idrija to Batesville (Arkansas) | 5,142.51 mi (8,276.07 km) |
| Idrija to Baton Rouge (Louisiana) | 5,389.40 mi (8,673.40 km) |
| Idrija to Battle Creek (Michigan) | 4,582.90 mi (7,375.46 km) |
| Idrija to Battle Ground (Washington) | 5,567.44 mi (8,959.93 km) |
| Idrija to Bay City (Michigan) | 4,473.17 mi (7,198.86 km) |
