| Republic to Cocentaina | 4,822.56 mi (7,761.16 km) |
| Republic to Coin | 4,696.01 mi (7,557.50 km) |
| Republic to Colindres | 4,524.71 mi (7,281.81 km) |
| Republic to Collado-Villalba | 4,592.85 mi (7,391.47 km) |
| Republic to Colmenar Viejo | 4,603.02 mi (7,407.84 km) |
| Republic to Colmenarejo | 4,594.93 mi (7,394.83 km) |
| Republic to Conil de la Frontera | 4,646.21 mi (7,477.35 km) |
| Republic to Consuegra | 4,651.65 mi (7,486.12 km) |
| Republic to Corbera de Llobregat | 4,830.49 mi (7,773.93 km) |
| Republic to Cordoba | 4,651.91 mi (7,486.52 km) |
| Republic to Coria del Rio | 4,612.56 mi (7,423.20 km) |
| Republic to Crevillente | 4,823.83 mi (7,763.20 km) |
| Republic to Cuarte de Huerva | 4,698.91 mi (7,562.16 km) |
| Republic to Cubellas | 4,826.82 mi (7,768.02 km) |
| Republic to Cuellar | 4,552.95 mi (7,327.26 km) |
