| Swansea to Castelfidardo | 5,029.24 mi (8,093.78 km) |
| Swansea to Castelfiorentino | 4,919.83 mi (7,917.70 km) |
| Swansea to Castelfranco di Sopra | 4,942.83 mi (7,954.71 km) |
| Swansea to Castelfranco di Sotto | 4,907.00 mi (7,897.05 km) |
| Swansea to Castelfranco Emilia | 4,883.13 mi (7,858.64 km) |
| Swansea to Castelfranco Veneto | 4,874.90 mi (7,845.39 km) |
| Swansea to Castellabate | 5,221.75 mi (8,403.60 km) |
| Swansea to Castellammare del Golfo | 5,231.46 mi (8,419.22 km) |
| Swansea to Castellammare di Stabia | 5,184.43 mi (8,343.54 km) |
| Swansea to Castellamonte | 4,717.89 mi (7,592.72 km) |
| Swansea to Castellana Grotte | 5,285.31 mi (8,505.88 km) |
| Swansea to Castellaneta | 5,286.96 mi (8,508.53 km) |
| Swansea to Castellanza | 4,756.71 mi (7,655.18 km) |
| Swansea to Castellarano | 4,873.53 mi (7,843.20 km) |
| Swansea to Castelleone | 4,803.67 mi (7,730.76 km) |
