| Idar-Oberstein to Boppard | 37.99 mi (61.14 km) |
| Idar-Oberstein to Borgentreich | 153.73 mi (247.40 km) |
| Idar-Oberstein to Borgholzhausen | 170.54 mi (274.46 km) |
| Idar-Oberstein to Borken | 147.90 mi (238.02 km) |
| Idar-Oberstein to Borna | 248.09 mi (399.26 km) |
| Idar-Oberstein to Bornheim | 73.67 mi (118.55 km) |
| Idar-Oberstein to Bosel | 229.29 mi (369.01 km) |
| Idar-Oberstein to Bottrop | 126.45 mi (203.50 km) |
| Idar-Oberstein to Bovenden | 172.91 mi (278.28 km) |
| Idar-Oberstein to Brackenheim | 90.00 mi (144.85 km) |
| Idar-Oberstein to Brake | 255.25 mi (410.78 km) |
| Idar-Oberstein to Brakel | 160.90 mi (258.94 km) |
| Idar-Oberstein to Bramsche | 188.03 mi (302.60 km) |
| Idar-Oberstein to Brand | 87.83 mi (141.34 km) |
| Idar-Oberstein to Brand-Erbisdorf | 276.95 mi (445.71 km) |
