| Illescas to Cocentaina | 204.34 mi (328.86 km) |
| Illescas to Coin | 243.48 mi (391.85 km) |
| Illescas to Colindres | 227.49 mi (366.11 km) |
| Illescas to Collado-Villalba | 36.86 mi (59.33 km) |
| Illescas to Colmenar Viejo | 37.63 mi (60.56 km) |
| Illescas to Colmenarejo | 32.17 mi (51.78 km) |
| Illescas to Conil de la Frontera | 292.70 mi (471.05 km) |
| Illescas to Consuegra | 46.82 mi (75.35 km) |
| Illescas to Corbera de Llobregat | 314.68 mi (506.43 km) |
| Illescas to Cordoba | 162.38 mi (261.33 km) |
| Illescas to Coria del Rio | 229.35 mi (369.11 km) |
| Illescas to Crevillente | 207.09 mi (333.28 km) |
| Illescas to Cuarte de Huerva | 183.02 mi (294.55 km) |
| Illescas to Cubellas | 298.28 mi (480.04 km) |
| Illescas to Cuellar | 92.22 mi (148.42 km) |
