| Swansea to Cortona | 4,974.44 mi (8,005.58 km) |
| Swansea to Cosenza | 5,317.86 mi (8,558.27 km) |
| Swansea to Cossato | 4,729.19 mi (7,610.90 km) |
| Swansea to Costa Volpino | 4,796.12 mi (7,718.61 km) |
| Swansea to Creazzo | 4,862.59 mi (7,825.58 km) |
| Swansea to Crema | 4,797.78 mi (7,721.29 km) |
| Swansea to Cremona | 4,820.96 mi (7,758.59 km) |
| Swansea to Crevalcore | 4,882.19 mi (7,857.13 km) |
| Swansea to Crispiano | 5,300.52 mi (8,530.36 km) |
| Swansea to Crosia | 5,327.31 mi (8,573.48 km) |
| Swansea to Crotone | 5,363.10 mi (8,631.07 km) |
| Swansea to Cuneo | 4,749.45 mi (7,643.51 km) |
| Swansea to Cuorgne | 4,715.08 mi (7,588.18 km) |
| Swansea to Cusano Milanino | 4,770.63 mi (7,677.59 km) |
| Swansea to Cutro | 5,359.83 mi (8,625.81 km) |
