| Helmstedt to Butzbach | 159.98 mi (257.46 km) |
| Helmstedt to Buxtehude | 102.12 mi (164.35 km) |
| Helmstedt to Cadolzburg | 192.05 mi (309.08 km) |
| Helmstedt to Calbe | 39.50 mi (63.56 km) |
| Helmstedt to Calw | 262.44 mi (422.35 km) |
| Helmstedt to Castrop-Rauxel | 164.32 mi (264.45 km) |
| Helmstedt to Celle | 47.78 mi (76.90 km) |
| Helmstedt to Cham | 220.06 mi (354.16 km) |
| Helmstedt to Chemnitz | 126.48 mi (203.55 km) |
| Helmstedt to Clausthal-Zellerfeld | 40.97 mi (65.93 km) |
| Helmstedt to Cloppenburg | 131.62 mi (211.81 km) |
| Helmstedt to Coburg | 135.53 mi (218.12 km) |
| Helmstedt to Coesfeld | 164.29 mi (264.41 km) |
| Helmstedt to Cologne | 195.71 mi (314.96 km) |
| Helmstedt to Coswig | 133.66 mi (215.11 km) |
