| National City to Cocentaina | 6,047.28 mi (9,732.15 km) |
| National City to Coin | 5,958.72 mi (9,589.63 km) |
| National City to Colindres | 5,720.49 mi (9,206.24 km) |
| National City to Collado-Villalba | 5,818.14 mi (9,363.39 km) |
| National City to Colmenar Viejo | 5,826.91 mi (9,377.51 km) |
| National City to Colmenarejo | 5,820.94 mi (9,367.89 km) |
| National City to Conil de la Frontera | 5,917.77 mi (9,523.73 km) |
| National City to Consuegra | 5,885.64 mi (9,472.02 km) |
| National City to Corbera de Llobregat | 6,017.60 mi (9,684.39 km) |
| National City to Cordoba | 5,904.87 mi (9,502.97 km) |
| National City to Coria del Rio | 5,876.01 mi (9,456.52 km) |
| National City to Crevillente | 6,054.77 mi (9,744.22 km) |
| National City to Cuarte de Huerva | 5,899.79 mi (9,494.79 km) |
| National City to Cubellas | 6,017.37 mi (9,684.03 km) |
| National City to Cuellar | 5,772.52 mi (9,289.98 km) |
