| Humacao to Carmona | 3,843.93 mi (6,186.21 km) |
| Humacao to Cartagena | 4,098.91 mi (6,596.56 km) |
| Humacao to Cartama | 3,897.14 mi (6,271.84 km) |
| Humacao to Cartaya | 3,760.08 mi (6,051.26 km) |
| Humacao to Caspe | 4,152.80 mi (6,683.29 km) |
| Humacao to Cassa de la Selva | 4,303.65 mi (6,926.06 km) |
| Humacao to Castalla | 4,116.04 mi (6,624.13 km) |
| Humacao to Castellbisbal | 4,257.58 mi (6,851.91 km) |
| Humacao to Castelldefels | 4,257.24 mi (6,851.36 km) |
| Humacao to Castello de Ampurias | 4,313.91 mi (6,942.57 km) |
| Humacao to Castellon de la Plana | 4,151.10 mi (6,680.55 km) |
| Humacao to Castilleja de la Cuesta | 3,820.81 mi (6,149.00 km) |
| Humacao to Catarroja | 4,130.85 mi (6,647.97 km) |
| Humacao to Catral | 4,108.62 mi (6,612.18 km) |
| Humacao to Caudete | 4,098.98 mi (6,596.68 km) |
