| Swansea to Cadillac (Michigan) | 459.29 mi (739.15 km) |
| Swansea to Caguas (Puerto Rico) | 2,010.09 mi (3,234.94 km) |
| Swansea to Cahokia (Illinois) | 10.50 mi (16.90 km) |
| Swansea to Calabasas (California) | 1,618.29 mi (2,604.39 km) |
| Swansea to Caldwell (Idaho) | 1,425.97 mi (2,294.88 km) |
| Swansea to Caledonia (Wisconsin) | 313.60 mi (504.69 km) |
| Swansea to Calera (Alabama) | 416.41 mi (670.15 km) |
| Swansea to Calexico (California) | 1,483.52 mi (2,387.50 km) |
| Swansea to Calhoun (Georgia) | 396.38 mi (637.91 km) |
| Swansea to California (Maryland) | 729.82 mi (1,174.53 km) |
| Swansea to California City (California) | 1,553.35 mi (2,499.88 km) |
| Swansea to Callaway (Florida) | 633.77 mi (1,019.96 km) |
| Swansea to Calumet City (Illinois) | 247.67 mi (398.59 km) |
| Swansea to Calverton (Maryland) | 702.23 mi (1,130.14 km) |
| Swansea to Camano (Washington) | 1,745.96 mi (2,809.86 km) |
