| Key West to Cabestany | 4,830.97 mi (7,774.69 km) |
| Key West to Cabries | 4,934.77 mi (7,941.74 km) |
| Key West to Cachan | 4,699.90 mi (7,563.76 km) |
| Key West to Caen | 4,574.51 mi (7,361.96 km) |
| Key West to Cagnes-sur-Mer | 5,014.89 mi (8,070.69 km) |
| Key West to Cahors | 4,727.45 mi (7,608.10 km) |
| Key West to Calais | 4,648.00 mi (7,480.23 km) |
| Key West to Caluire-et-Cuire | 4,864.64 mi (7,828.88 km) |
| Key West to Cambrai | 4,718.38 mi (7,593.50 km) |
| Key West to Canet-en-Roussillon | 4,833.66 mi (7,779.03 km) |
| Key West to Cannes | 5,010.77 mi (8,064.05 km) |
| Key West to Canteleu | 4,633.06 mi (7,456.19 km) |
| Key West to Capbreton | 4,601.02 mi (7,404.63 km) |
| Key West to Carcassonne | 4,792.50 mi (7,712.78 km) |
| Key West to Carmaux | 4,768.59 mi (7,674.31 km) |
