| Echelon to Cehegin | 3,817.50 mi (6,143.68 km) |
| Echelon to Cervello | 3,895.36 mi (6,268.98 km) |
| Echelon to Cervera | 3,855.22 mi (6,204.38 km) |
| Echelon to Ceuti | 3,843.52 mi (6,185.55 km) |
| Echelon to Cheste | 3,828.77 mi (6,161.80 km) |
| Echelon to Chiclana de la Frontera | 3,654.35 mi (5,881.11 km) |
| Echelon to Chipiona | 3,630.64 mi (5,842.95 km) |
| Echelon to Chiva | 3,827.33 mi (6,159.49 km) |
| Echelon to Churriana de la Vega | 3,755.93 mi (6,044.58 km) |
| Echelon to Ciempozuelos | 3,667.96 mi (5,903.00 km) |
| Echelon to Cieza | 3,831.43 mi (6,166.09 km) |
| Echelon to Cisterniga | 3,576.46 mi (5,755.75 km) |
| Echelon to Ciudad de Melilla | 3,849.72 mi (6,195.52 km) |
| Echelon to Ciudad Real | 3,687.67 mi (5,934.73 km) |
| Echelon to Ciudad-Rodrigo | 3,515.06 mi (5,656.95 km) |
