| Grefrath to Butzbach | 118.74 mi (191.10 km) |
| Grefrath to Buxtehude | 204.74 mi (329.50 km) |
| Grefrath to Cadolzburg | 238.11 mi (383.21 km) |
| Grefrath to Calbe | 236.36 mi (380.39 km) |
| Grefrath to Calw | 209.82 mi (337.68 km) |
| Grefrath to Castrop-Rauxel | 44.55 mi (71.69 km) |
| Grefrath to Celle | 182.42 mi (293.58 km) |
| Grefrath to Cham | 314.59 mi (506.28 km) |
| Grefrath to Chemnitz | 287.42 mi (462.55 km) |
| Grefrath to Clausthal-Zellerfeld | 174.56 mi (280.93 km) |
| Grefrath to Cloppenburg | 127.28 mi (204.84 km) |
| Grefrath to Coburg | 215.05 mi (346.09 km) |
| Grefrath to Coesfeld | 55.24 mi (88.91 km) |
| Grefrath to Cologne | 38.31 mi (61.65 km) |
| Grefrath to Coswig | 313.51 mi (504.54 km) |
