| Castrop-Rauxel to Blumberg | 262.09 mi (421.80 km) |
| Castrop-Rauxel to Bobenheim-Roxheim | 143.36 mi (230.72 km) |
| Castrop-Rauxel to Bobingen | 275.10 mi (442.73 km) |
| Castrop-Rauxel to Boblingen | 211.72 mi (340.73 km) |
| Castrop-Rauxel to Bocholt | 35.81 mi (57.62 km) |
| Castrop-Rauxel to Bochum | 6.40 mi (10.30 km) |
| Castrop-Rauxel to Bockenem | 124.49 mi (200.34 km) |
| Castrop-Rauxel to Bockhorn | 131.17 mi (211.10 km) |
| Castrop-Rauxel to Bogen | 298.80 mi (480.88 km) |
| Castrop-Rauxel to Bohl-Iggelheim | 156.72 mi (252.21 km) |
| Castrop-Rauxel to Bohmte | 70.69 mi (113.76 km) |
| Castrop-Rauxel to Boizenburg | 190.35 mi (306.33 km) |
| Castrop-Rauxel to Bonen | 19.30 mi (31.05 km) |
| Castrop-Rauxel to Bonn | 57.20 mi (92.06 km) |
| Castrop-Rauxel to Bopfingen | 229.40 mi (369.19 km) |
