| Swansea to Cocentaina | 4,611.40 mi (7,421.32 km) |
| Swansea to Coin | 4,483.91 mi (7,216.16 km) |
| Swansea to Colindres | 4,315.02 mi (6,944.35 km) |
| Swansea to Collado-Villalba | 4,381.77 mi (7,051.78 km) |
| Swansea to Colmenar Viejo | 4,391.99 mi (7,068.23 km) |
| Swansea to Colmenarejo | 4,383.83 mi (7,055.09 km) |
| Swansea to Conil de la Frontera | 4,434.03 mi (7,135.88 km) |
| Swansea to Consuegra | 4,440.25 mi (7,145.89 km) |
| Swansea to Corbera de Llobregat | 4,620.99 mi (7,436.76 km) |
| Swansea to Cordoba | 4,439.99 mi (7,145.47 km) |
| Swansea to Coria del Rio | 4,400.47 mi (7,081.87 km) |
| Swansea to Crevillente | 4,612.45 mi (7,423.02 km) |
| Swansea to Cuarte de Huerva | 4,488.82 mi (7,224.06 km) |
| Swansea to Cubellas | 4,617.14 mi (7,430.58 km) |
| Swansea to Cuellar | 4,342.12 mi (6,987.97 km) |
