| Helston to Cocentaina | 819.50 mi (1,318.86 km) |
| Helston to Coin | 928.51 mi (1,494.30 km) |
| Helston to Colindres | 471.07 mi (758.12 km) |
| Helston to Collado-Villalba | 656.92 mi (1,057.21 km) |
| Helston to Colmenar Viejo | 656.35 mi (1,056.30 km) |
| Helston to Colmenarejo | 661.87 mi (1,065.18 km) |
| Helston to Conil de la Frontera | 956.65 mi (1,539.58 km) |
| Helston to Consuegra | 739.48 mi (1,190.09 km) |
| Helston to Corbera de Llobregat | 692.39 mi (1,114.29 km) |
| Helston to Cordoba | 844.36 mi (1,358.86 km) |
| Helston to Coria del Rio | 886.39 mi (1,426.51 km) |
| Helston to Crevillente | 847.77 mi (1,364.35 km) |
| Helston to Cuarte de Huerva | 624.36 mi (1,004.81 km) |
| Helston to Cubellas | 699.10 mi (1,125.09 km) |
| Helston to Cuellar | 602.80 mi (970.12 km) |
