| Helston to Cabestany | 644.14 mi (1,036.65 km) |
| Helston to Cabries | 681.20 mi (1,096.28 km) |
| Helston to Cachan | 353.07 mi (568.22 km) |
| Helston to Caen | 228.23 mi (367.29 km) |
| Helston to Cagnes-sur-Mer | 734.42 mi (1,181.93 km) |
| Helston to Cahors | 501.07 mi (806.40 km) |
| Helston to Calais | 318.34 mi (512.32 km) |
| Helston to Caluire-et-Cuire | 553.98 mi (891.54 km) |
| Helston to Cambrai | 376.50 mi (605.92 km) |
| Helston to Canet-en-Roussillon | 644.58 mi (1,037.35 km) |
| Helston to Cannes | 734.58 mi (1,182.19 km) |
| Helston to Canteleu | 284.83 mi (458.40 km) |
| Helston to Capbreton | 481.46 mi (774.84 km) |
| Helston to Carcassonne | 597.02 mi (960.81 km) |
| Helston to Carmaux | 544.39 mi (876.11 km) |
