| Idar-Oberstein to Borgosesia | 279.54 mi (449.87 km) |
| Idar-Oberstein to Boscoreale | 708.91 mi (1,140.89 km) |
| Idar-Oberstein to Boscotrecase | 707.50 mi (1,138.61 km) |
| Idar-Oberstein to Botticino Sera | 319.04 mi (513.45 km) |
| Idar-Oberstein to Bovalino Marina | 910.77 mi (1,465.75 km) |
| Idar-Oberstein to Boves | 371.76 mi (598.29 km) |
| Idar-Oberstein to Boville Ernica | 630.74 mi (1,015.07 km) |
| Idar-Oberstein to Bovisio Masciago | 295.52 mi (475.60 km) |
| Idar-Oberstein to Bovolone | 356.04 mi (572.99 km) |
| Idar-Oberstein to Bra | 347.17 mi (558.71 km) |
| Idar-Oberstein to Bracciano | 575.36 mi (925.95 km) |
| Idar-Oberstein to Brandizzo | 314.28 mi (505.79 km) |
| Idar-Oberstein to Breganze | 340.37 mi (547.77 km) |
| Idar-Oberstein to Brembate | 302.51 mi (486.84 km) |
| Idar-Oberstein to Brescia | 318.43 mi (512.47 km) |
