| Key Biscayne to Cocentaina | 4,603.60 mi (7,408.77 km) |
| Key Biscayne to Coin | 4,410.85 mi (7,098.58 km) |
| Key Biscayne to Colindres | 4,378.17 mi (7,045.99 km) |
| Key Biscayne to Collado-Villalba | 4,388.58 mi (7,062.74 km) |
| Key Biscayne to Colmenar Viejo | 4,400.63 mi (7,082.13 km) |
| Key Biscayne to Colmenarejo | 4,389.20 mi (7,063.73 km) |
| Key Biscayne to Conil de la Frontera | 4,345.22 mi (6,992.96 km) |
| Key Biscayne to Consuegra | 4,426.93 mi (7,124.45 km) |
| Key Biscayne to Corbera de Llobregat | 4,676.55 mi (7,526.18 km) |
| Key Biscayne to Cordoba | 4,389.80 mi (7,064.71 km) |
| Key Biscayne to Coria del Rio | 4,331.27 mi (6,970.50 km) |
| Key Biscayne to Crevillente | 4,593.24 mi (7,392.10 km) |
| Key Biscayne to Cuarte de Huerva | 4,530.93 mi (7,291.83 km) |
| Key Biscayne to Cubellas | 4,667.39 mi (7,511.43 km) |
| Key Biscayne to Cuellar | 4,362.08 mi (7,020.09 km) |
