| Helmstedt to Cabestany | 758.69 mi (1,220.99 km) |
| Helmstedt to Cabries | 660.42 mi (1,062.84 km) |
| Helmstedt to Cachan | 448.76 mi (722.21 km) |
| Helmstedt to Caen | 539.95 mi (868.97 km) |
| Helmstedt to Cagnes-sur-Mer | 617.87 mi (994.36 km) |
| Helmstedt to Cahors | 693.20 mi (1,115.59 km) |
| Helmstedt to Calais | 402.51 mi (647.77 km) |
| Helmstedt to Caluire-et-Cuire | 524.51 mi (844.12 km) |
| Helmstedt to Cambrai | 364.98 mi (587.38 km) |
| Helmstedt to Canet-en-Roussillon | 755.67 mi (1,216.13 km) |
| Helmstedt to Cannes | 627.22 mi (1,009.41 km) |
| Helmstedt to Canteleu | 475.11 mi (764.61 km) |
| Helmstedt to Capbreton | 824.67 mi (1,327.17 km) |
| Helmstedt to Carcassonne | 740.67 mi (1,191.99 km) |
| Helmstedt to Carmaux | 696.01 mi (1,120.11 km) |
