| Alton to Cocentaina | 857.48 mi (1,379.99 km) |
| Alton to Coin | 1,017.81 mi (1,638.00 km) |
| Alton to Colindres | 547.99 mi (881.90 km) |
| Alton to Collado-Villalba | 740.93 mi (1,192.41 km) |
| Alton to Colmenar Viejo | 737.00 mi (1,186.09 km) |
| Alton to Colmenarejo | 745.94 mi (1,200.47 km) |
| Alton to Conil de la Frontera | 1,058.82 mi (1,704.00 km) |
| Alton to Consuegra | 817.46 mi (1,315.58 km) |
| Alton to Corbera de Llobregat | 686.52 mi (1,104.85 km) |
| Alton to Cordoba | 935.16 mi (1,505.00 km) |
| Alton to Coria del Rio | 989.86 mi (1,593.03 km) |
| Alton to Crevillente | 891.42 mi (1,434.61 km) |
| Alton to Cuarte de Huerva | 660.99 mi (1,063.76 km) |
| Alton to Cubellas | 698.26 mi (1,123.74 km) |
| Alton to Cuellar | 691.98 mi (1,113.64 km) |
