| Grays to Cocentaina | 880.35 mi (1,416.78 km) |
| Grays to Coin | 1,053.12 mi (1,694.84 km) |
| Grays to Colindres | 585.22 mi (941.81 km) |
| Grays to Collado-Villalba | 777.08 mi (1,250.58 km) |
| Grays to Colmenar Viejo | 772.36 mi (1,243.00 km) |
| Grays to Colmenarejo | 782.05 mi (1,258.58 km) |
| Grays to Conil de la Frontera | 1,097.22 mi (1,765.80 km) |
| Grays to Consuegra | 851.33 mi (1,370.09 km) |
| Grays to Corbera de Llobregat | 699.07 mi (1,125.05 km) |
| Grays to Cordoba | 971.38 mi (1,563.28 km) |
| Grays to Coria del Rio | 1,028.94 mi (1,655.92 km) |
| Grays to Crevillente | 915.53 mi (1,473.40 km) |
| Grays to Cuarte de Huerva | 685.99 mi (1,103.99 km) |
| Grays to Cubellas | 712.10 mi (1,146.01 km) |
| Grays to Cuellar | 729.94 mi (1,174.73 km) |
