| Key Largo to Cadiz | 4,362.31 mi (7,020.46 km) |
| Key Largo to Calafell | 4,698.03 mi (7,560.75 km) |
| Key Largo to Calahorra | 4,503.08 mi (7,247.01 km) |
| Key Largo to Calasparra | 4,580.92 mi (7,372.28 km) |
| Key Largo to Calatayud | 4,534.07 mi (7,296.88 km) |
| Key Largo to Caldas de Montbuy | 4,720.33 mi (7,596.64 km) |
| Key Largo to Caldas de Reyes | 4,164.65 mi (6,702.35 km) |
| Key Largo to Calella | 4,745.38 mi (7,636.96 km) |
| Key Largo to Callosa de Segura | 4,625.93 mi (7,444.72 km) |
| Key Largo to Calpe | 4,665.11 mi (7,507.77 km) |
| Key Largo to Calvia | 4,775.43 mi (7,685.32 km) |
| Key Largo to Camas | 4,363.71 mi (7,022.71 km) |
| Key Largo to Cambados | 4,157.48 mi (6,690.82 km) |
| Key Largo to Cambre | 4,173.48 mi (6,716.58 km) |
| Key Largo to Cambrils | 4,674.53 mi (7,522.93 km) |
