| Swansea to Carmona | 4,414.00 mi (7,103.64 km) |
| Swansea to Cartagena | 4,628.02 mi (7,448.07 km) |
| Swansea to Cartama | 4,488.03 mi (7,222.79 km) |
| Swansea to Cartaya | 4,347.89 mi (6,997.25 km) |
| Swansea to Caspe | 4,540.54 mi (7,307.29 km) |
| Swansea to Cassa de la Selva | 4,645.02 mi (7,475.43 km) |
| Swansea to Castalla | 4,606.20 mi (7,412.96 km) |
| Swansea to Castellbisbal | 4,621.05 mi (7,436.86 km) |
| Swansea to Castelldefels | 4,627.98 mi (7,448.01 km) |
| Swansea to Castello de Ampurias | 4,640.19 mi (7,467.66 km) |
| Swansea to Castellon de la Plana | 4,585.23 mi (7,379.21 km) |
| Swansea to Castilleja de la Cuesta | 4,397.03 mi (7,076.34 km) |
| Swansea to Catarroja | 4,589.27 mi (7,385.72 km) |
| Swansea to Catral | 4,615.87 mi (7,428.52 km) |
| Swansea to Caudete | 4,587.71 mi (7,383.21 km) |
