| Southend to Cehegin | 937.77 mi (1,509.19 km) |
| Southend to Cervello | 704.04 mi (1,133.05 km) |
| Southend to Cervera | 683.45 mi (1,099.91 km) |
| Southend to Ceuti | 935.73 mi (1,505.91 km) |
| Southend to Cheste | 836.66 mi (1,346.48 km) |
| Southend to Chiclana de la Frontera | 1,098.62 mi (1,768.06 km) |
| Southend to Chipiona | 1,082.00 mi (1,741.30 km) |
| Southend to Chiva | 837.37 mi (1,347.62 km) |
| Southend to Churriana de la Vega | 1,017.53 mi (1,637.55 km) |
| Southend to Ciempozuelos | 813.75 mi (1,309.60 km) |
| Southend to Cieza | 925.47 mi (1,489.39 km) |
| Southend to Cisterniga | 732.05 mi (1,178.12 km) |
| Southend to Ciudad de Melilla | 1,138.50 mi (1,832.23 km) |
| Southend to Ciudad Real | 896.48 mi (1,442.75 km) |
| Southend to Ciudad-Rodrigo | 831.76 mi (1,338.58 km) |
