| Southend to Carmona | 1,021.06 mi (1,643.24 km) |
| Southend to Cartagena | 967.37 mi (1,556.84 km) |
| Southend to Cartama | 1,058.18 mi (1,702.98 km) |
| Southend to Cartaya | 1,057.82 mi (1,702.40 km) |
| Southend to Caspe | 713.68 mi (1,148.56 km) |
| Southend to Cassa de la Selva | 675.23 mi (1,086.68 km) |
| Southend to Castalla | 897.48 mi (1,444.35 km) |
| Southend to Castellbisbal | 698.59 mi (1,124.28 km) |
| Southend to Castelldefels | 712.12 mi (1,146.05 km) |
| Southend to Castello de Ampurias | 651.54 mi (1,048.55 km) |
| Southend to Castellon de la Plana | 799.99 mi (1,287.45 km) |
| Southend to Castilleja de la Cuesta | 1,032.92 mi (1,662.33 km) |
| Southend to Catarroja | 841.00 mi (1,353.46 km) |
| Southend to Catral | 928.12 mi (1,493.66 km) |
| Southend to Caudete | 891.33 mi (1,434.46 km) |
