| Idstein to Blumberg | 164.96 mi (265.48 km) |
| Idstein to Bobenheim-Roxheim | 44.16 mi (71.07 km) |
| Idstein to Bobingen | 177.12 mi (285.04 km) |
| Idstein to Boblingen | 111.16 mi (178.89 km) |
| Idstein to Bocholt | 132.67 mi (213.52 km) |
| Idstein to Bochum | 98.62 mi (158.71 km) |
| Idstein to Bockenem | 147.66 mi (237.64 km) |
| Idstein to Bockhorn | 219.95 mi (353.98 km) |
| Idstein to Bogen | 217.10 mi (349.38 km) |
| Idstein to Bohl-Iggelheim | 58.69 mi (94.46 km) |
| Idstein to Bohmte | 148.29 mi (238.65 km) |
| Idstein to Boizenburg | 241.10 mi (388.01 km) |
| Idstein to Bonen | 97.82 mi (157.42 km) |
| Idstein to Bonn | 62.61 mi (100.77 km) |
| Idstein to Bopfingen | 132.50 mi (213.24 km) |
