| Castrop-Rauxel to Isselburg | 41.33 mi (66.51 km) |
| Castrop-Rauxel to Issum | 38.38 mi (61.77 km) |
| Castrop-Rauxel to Itzehoe | 188.12 mi (302.74 km) |
| Castrop-Rauxel to Jena | 189.60 mi (305.13 km) |
| Castrop-Rauxel to Jever | 142.01 mi (228.54 km) |
| Castrop-Rauxel to Jork | 169.32 mi (272.49 km) |
| Castrop-Rauxel to Juchen | 46.91 mi (75.49 km) |
| Castrop-Rauxel to Julich | 60.00 mi (96.57 km) |
| Castrop-Rauxel to Juterbog | 247.93 mi (399.01 km) |
| Castrop-Rauxel to Kaarst | 37.97 mi (61.10 km) |
| Castrop-Rauxel to Kaiserslautern | 146.81 mi (236.27 km) |
| Castrop-Rauxel to Kalkar | 45.81 mi (73.73 km) |
| Castrop-Rauxel to Kall | 76.72 mi (123.47 km) |
| Castrop-Rauxel to Kaltenkirchen | 193.06 mi (310.70 km) |
| Castrop-Rauxel to Kamen | 15.25 mi (24.53 km) |
