| Humacao to Cadiz | 3,804.32 mi (6,122.46 km) |
| Humacao to Calafell | 4,236.04 mi (6,817.25 km) |
| Humacao to Calahorra | 4,056.43 mi (6,528.19 km) |
| Humacao to Calasparra | 4,060.06 mi (6,534.04 km) |
| Humacao to Calatayud | 4,070.08 mi (6,550.17 km) |
| Humacao to Caldas de Montbuy | 4,267.21 mi (6,867.41 km) |
| Humacao to Caldas de Reyes | 3,720.40 mi (5,987.41 km) |
| Humacao to Calella | 4,292.86 mi (6,908.69 km) |
| Humacao to Callosa de Segura | 4,104.55 mi (6,605.63 km) |
| Humacao to Calpe | 4,154.65 mi (6,686.26 km) |
| Humacao to Calvia | 4,285.99 mi (6,897.63 km) |
| Humacao to Camas | 3,821.80 mi (6,150.59 km) |
| Humacao to Cambados | 3,711.21 mi (5,972.62 km) |
| Humacao to Cambre | 3,742.72 mi (6,023.32 km) |
| Humacao to Cambrils | 4,209.27 mi (6,774.16 km) |
