| Helmstedt to Cognac | 682.95 mi (1,099.10 km) |
| Helmstedt to Cogolin | 653.84 mi (1,052.26 km) |
| Helmstedt to Colmar | 328.92 mi (529.35 km) |
| Helmstedt to Colombes | 446.57 mi (718.68 km) |
| Helmstedt to Colomiers | 743.54 mi (1,196.61 km) |
| Helmstedt to Combs-la-Ville | 445.29 mi (716.62 km) |
| Helmstedt to Comines | 358.65 mi (577.19 km) |
| Helmstedt to Compiegne | 406.48 mi (654.17 km) |
| Helmstedt to Concarneau | 725.65 mi (1,167.83 km) |
| Helmstedt to Conde-sur-l'Escaut | 342.85 mi (551.77 km) |
| Helmstedt to Conflans-Sainte-Honorine | 449.50 mi (723.39 km) |
| Helmstedt to Corbas | 530.86 mi (854.34 km) |
| Helmstedt to Corbeil-Essonnes | 450.46 mi (724.94 km) |
| Helmstedt to Cormeilles-en-Parisis | 446.55 mi (718.65 km) |
| Helmstedt to Cosne sur Loire | 490.11 mi (788.75 km) |
