| Howard to Cehegin | 4,285.03 mi (6,896.09 km) |
| Howard to Cervello | 4,310.15 mi (6,936.52 km) |
| Howard to Cervera | 4,270.45 mi (6,872.62 km) |
| Howard to Ceuti | 4,308.62 mi (6,934.05 km) |
| Howard to Cheste | 4,276.66 mi (6,882.62 km) |
| Howard to Chiclana de la Frontera | 4,159.45 mi (6,693.98 km) |
| Howard to Chipiona | 4,133.94 mi (6,652.94 km) |
| Howard to Chiva | 4,275.48 mi (6,880.72 km) |
| Howard to Churriana de la Vega | 4,241.86 mi (6,826.61 km) |
| Howard to Ciempozuelos | 4,122.64 mi (6,634.75 km) |
| Howard to Cieza | 4,295.62 mi (6,913.13 km) |
| Howard to Cisterniga | 4,020.04 mi (6,469.63 km) |
| Howard to Ciudad de Melilla | 4,350.30 mi (7,001.13 km) |
| Howard to Ciudad Real | 4,156.20 mi (6,688.76 km) |
| Howard to Ciudad-Rodrigo | 3,978.37 mi (6,402.56 km) |
