| Madison to Cocentaina | 4,424.03 mi (7,119.79 km) |
| Madison to Coin | 4,314.61 mi (6,943.69 km) |
| Madison to Colindres | 4,114.37 mi (6,621.44 km) |
| Madison to Collado-Villalba | 4,193.84 mi (6,749.33 km) |
| Madison to Colmenar Viejo | 4,203.47 mi (6,764.83 km) |
| Madison to Colmenarejo | 4,196.22 mi (6,753.16 km) |
| Madison to Conil de la Frontera | 4,269.48 mi (6,871.06 km) |
| Madison to Consuegra | 4,256.48 mi (6,850.14 km) |
| Madison to Corbera de Llobregat | 4,418.33 mi (7,110.61 km) |
| Madison to Cordoba | 4,265.46 mi (6,864.59 km) |
| Madison to Coria del Rio | 4,231.34 mi (6,809.69 km) |
| Madison to Crevillente | 4,427.88 mi (7,125.98 km) |
| Madison to Cuarte de Huerva | 4,290.96 mi (6,905.63 km) |
| Madison to Cubellas | 4,415.77 mi (7,106.50 km) |
| Madison to Cuellar | 4,151.50 mi (6,681.20 km) |
