| Humacao to Cocentaina | 4,128.52 mi (6,644.21 km) |
| Humacao to Coin | 3,890.44 mi (6,261.05 km) |
| Humacao to Colindres | 3,987.29 mi (6,416.92 km) |
| Humacao to Collado-Villalba | 3,943.63 mi (6,346.66 km) |
| Humacao to Colmenar Viejo | 3,956.43 mi (6,367.26 km) |
| Humacao to Colmenarejo | 3,942.85 mi (6,345.40 km) |
| Humacao to Conil de la Frontera | 3,815.45 mi (6,140.37 km) |
| Humacao to Consuegra | 3,960.19 mi (6,373.31 km) |
| Humacao to Corbera de Llobregat | 4,254.93 mi (6,847.64 km) |
| Humacao to Cordoba | 3,891.91 mi (6,263.42 km) |
| Humacao to Coria del Rio | 3,820.45 mi (6,148.42 km) |
| Humacao to Crevillente | 4,108.43 mi (6,611.88 km) |
| Humacao to Cuarte de Huerva | 4,107.84 mi (6,610.94 km) |
| Humacao to Cubellas | 4,241.47 mi (6,825.98 km) |
| Humacao to Cuellar | 3,931.61 mi (6,327.32 km) |
