| Middle Island to Cocentaina | 3,735.28 mi (6,011.35 km) |
| Middle Island to Coin | 3,590.54 mi (5,778.42 km) |
| Middle Island to Colindres | 3,458.15 mi (5,565.35 km) |
| Middle Island to Collado-Villalba | 3,507.79 mi (5,645.24 km) |
| Middle Island to Colmenar Viejo | 3,518.63 mi (5,662.69 km) |
| Middle Island to Colmenarejo | 3,509.44 mi (5,647.91 km) |
| Middle Island to Conil de la Frontera | 3,536.99 mi (5,692.24 km) |
| Middle Island to Consuegra | 3,561.13 mi (5,731.09 km) |
| Middle Island to Corbera de Llobregat | 3,764.52 mi (6,058.41 km) |
| Middle Island to Cordoba | 3,551.48 mi (5,715.56 km) |
| Middle Island to Coria del Rio | 3,507.31 mi (5,644.47 km) |
| Middle Island to Crevillente | 3,733.21 mi (6,008.02 km) |
| Middle Island to Cuarte de Huerva | 3,626.66 mi (5,836.54 km) |
| Middle Island to Cubellas | 3,758.86 mi (6,049.29 km) |
| Middle Island to Cuellar | 3,471.65 mi (5,587.08 km) |
