| Helmstedt to Carpentras | 627.48 mi (1,009.84 km) |
| Helmstedt to Carquefou | 652.52 mi (1,050.13 km) |
| Helmstedt to Carqueiranne | 671.16 mi (1,080.13 km) |
| Helmstedt to Carrieres-sous-Poissy | 453.71 mi (730.17 km) |
| Helmstedt to Carrieres-sur-Seine | 445.69 mi (717.26 km) |
| Helmstedt to Carros | 610.08 mi (981.82 km) |
| Helmstedt to Carvin | 367.27 mi (591.07 km) |
| Helmstedt to Castanet-Tolosan | 744.82 mi (1,198.67 km) |
| Helmstedt to Castelginest | 736.30 mi (1,184.96 km) |
| Helmstedt to Castelnau-le-Lez | 677.95 mi (1,091.06 km) |
| Helmstedt to Castelnaudary | 744.31 mi (1,197.85 km) |
| Helmstedt to Castelsarrasin | 725.71 mi (1,167.91 km) |
| Helmstedt to Castres | 719.96 mi (1,158.67 km) |
| Helmstedt to Caudebec-les-Elbeuf | 481.27 mi (774.52 km) |
| Helmstedt to Caudry | 359.57 mi (578.68 km) |
