| Clayton to Cocentaina | 1,040.97 mi (1,675.28 km) |
| Clayton to Coin | 1,190.90 mi (1,916.56 km) |
| Clayton to Colindres | 721.38 mi (1,160.95 km) |
| Clayton to Collado-Villalba | 914.19 mi (1,471.25 km) |
| Clayton to Colmenar Viejo | 911.24 mi (1,466.51 km) |
| Clayton to Colmenarejo | 919.22 mi (1,479.35 km) |
| Clayton to Conil de la Frontera | 1,227.46 mi (1,975.41 km) |
| Clayton to Consuegra | 992.99 mi (1,598.06 km) |
| Clayton to Corbera de Llobregat | 871.66 mi (1,402.81 km) |
| Clayton to Cordoba | 1,107.40 mi (1,782.19 km) |
| Clayton to Coria del Rio | 1,157.72 mi (1,863.17 km) |
| Clayton to Crevillente | 1,074.31 mi (1,728.93 km) |
| Clayton to Cuarte de Huerva | 843.86 mi (1,358.06 km) |
| Clayton to Cubellas | 883.48 mi (1,421.83 km) |
| Clayton to Cuellar | 863.21 mi (1,389.20 km) |
