| Frechen to Butzbach | 87.34 mi (140.56 km) |
| Frechen to Buxtehude | 214.93 mi (345.90 km) |
| Frechen to Cadolzburg | 205.81 mi (331.22 km) |
| Frechen to Calbe | 224.27 mi (360.93 km) |
| Frechen to Calw | 174.36 mi (280.60 km) |
| Frechen to Castrop-Rauxel | 48.81 mi (78.55 km) |
| Frechen to Celle | 182.83 mi (294.23 km) |
| Frechen to Cham | 284.02 mi (457.09 km) |
| Frechen to Chemnitz | 265.94 mi (427.99 km) |
| Frechen to Clausthal-Zellerfeld | 163.73 mi (263.50 km) |
| Frechen to Cloppenburg | 143.56 mi (231.03 km) |
| Frechen to Coburg | 187.46 mi (301.69 km) |
| Frechen to Coesfeld | 72.97 mi (117.43 km) |
| Frechen to Cologne | 6.08 mi (9.79 km) |
| Frechen to Coswig | 294.34 mi (473.70 km) |
