| Helensburgh to Campo de Criptana | 1,150.47 mi (1,851.51 km) |
| Helensburgh to Campos del Puerto | 1,199.50 mi (1,930.40 km) |
| Helensburgh to Canals | 1,193.69 mi (1,921.06 km) |
| Helensburgh to Candelaria | 1,995.76 mi (3,211.87 km) |
| Helensburgh to Canet de Mar | 1,049.43 mi (1,688.89 km) |
| Helensburgh to Cangas | 967.24 mi (1,556.62 km) |
| Helensburgh to Cangas de Narcea | 891.11 mi (1,434.11 km) |
| Helensburgh to Canovellas | 1,043.51 mi (1,679.36 km) |
| Helensburgh to Canteras | 1,283.08 mi (2,064.91 km) |
| Helensburgh to Cantillana | 1,273.46 mi (2,049.43 km) |
| Helensburgh to Capdepera | 1,187.27 mi (1,910.73 km) |
| Helensburgh to Carballo | 901.51 mi (1,450.85 km) |
| Helensburgh to Carcagente | 1,183.69 mi (1,904.96 km) |
| Helensburgh to Cardedeu | 1,043.03 mi (1,678.60 km) |
| Helensburgh to Carlet | 1,176.01 mi (1,892.61 km) |
