| Southend to Cocentaina | 886.48 mi (1,426.66 km) |
| Southend to Coin | 1,062.66 mi (1,710.18 km) |
| Southend to Colindres | 595.62 mi (958.56 km) |
| Southend to Collado-Villalba | 787.00 mi (1,266.55 km) |
| Southend to Colmenar Viejo | 782.07 mi (1,258.62 km) |
| Southend to Colmenarejo | 791.95 mi (1,274.53 km) |
| Southend to Conil de la Frontera | 1,107.61 mi (1,782.52 km) |
| Southend to Consuegra | 860.57 mi (1,384.95 km) |
| Southend to Corbera de Llobregat | 702.51 mi (1,130.58 km) |
| Southend to Cordoba | 981.20 mi (1,579.09 km) |
| Southend to Coria del Rio | 1,039.55 mi (1,672.99 km) |
| Southend to Crevillente | 921.99 mi (1,483.79 km) |
| Southend to Cuarte de Huerva | 692.91 mi (1,115.13 km) |
| Southend to Cubellas | 715.88 mi (1,152.10 km) |
| Southend to Cuellar | 740.41 mi (1,191.57 km) |
