| Flensburg to Butzbach | 301.97 mi (485.98 km) |
| Flensburg to Buxtehude | 90.80 mi (146.13 km) |
| Flensburg to Cadolzburg | 373.34 mi (600.83 km) |
| Flensburg to Calbe | 221.03 mi (355.72 km) |
| Flensburg to Calw | 420.14 mi (676.15 km) |
| Flensburg to Castrop-Rauxel | 239.92 mi (386.11 km) |
| Flensburg to Celle | 151.31 mi (243.51 km) |
| Flensburg to Cham | 407.98 mi (656.58 km) |
| Flensburg to Chemnitz | 309.03 mi (497.34 km) |
| Flensburg to Clausthal-Zellerfeld | 209.00 mi (336.36 km) |
| Flensburg to Cloppenburg | 144.96 mi (233.30 km) |
| Flensburg to Coburg | 318.51 mi (512.59 km) |
| Flensburg to Coesfeld | 216.87 mi (349.01 km) |
| Flensburg to Cologne | 285.14 mi (458.89 km) |
| Flensburg to Coswig | 305.40 mi (491.49 km) |
