| Karlsruhe to Blumberg | 81.06 mi (130.45 km) |
| Karlsruhe to Bobenheim-Roxheim | 39.75 mi (63.98 km) |
| Karlsruhe to Bobingen | 121.51 mi (195.55 km) |
| Karlsruhe to Boblingen | 35.67 mi (57.41 km) |
| Karlsruhe to Bocholt | 210.38 mi (338.57 km) |
| Karlsruhe to Bochum | 178.73 mi (287.63 km) |
| Karlsruhe to Bockenem | 220.89 mi (355.49 km) |
| Karlsruhe to Bockhorn | 303.84 mi (488.98 km) |
| Karlsruhe to Bogen | 194.20 mi (312.54 km) |
| Karlsruhe to Bohl-Iggelheim | 25.39 mi (40.87 km) |
| Karlsruhe to Bohmte | 232.01 mi (373.39 km) |
| Karlsruhe to Boizenburg | 317.25 mi (510.57 km) |
| Karlsruhe to Bonen | 181.16 mi (291.54 km) |
| Karlsruhe to Bonn | 132.52 mi (213.27 km) |
| Karlsruhe to Bopfingen | 89.05 mi (143.31 km) |
