| Swansea to Decatur (Alabama) | 321.14 mi (516.82 km) |
| Swansea to Decatur (Georgia) | 457.83 mi (736.80 km) |
| Swansea to Decatur (Illinois) | 106.30 mi (171.07 km) |
| Swansea to Deer Park (New York) | 898.07 mi (1,445.31 km) |
| Swansea to Deer Park (Texas) | 678.59 mi (1,092.08 km) |
| Swansea to Deerfield (Illinois) | 273.84 mi (440.70 km) |
| Swansea to Deerfield Beach (Florida) | 1,021.46 mi (1,643.88 km) |
| Swansea to Defiance (Ohio) | 352.44 mi (567.20 km) |
| Swansea to DeForest (Wisconsin) | 325.05 mi (523.12 km) |
| Swansea to DeKalb (Illinois) | 242.53 mi (390.31 km) |
| Swansea to Del Aire (California) | 1,607.20 mi (2,586.54 km) |
| Swansea to Del City (Oklahoma) | 463.66 mi (746.18 km) |
| Swansea to Del Rio (Texas) | 888.67 mi (1,430.18 km) |
| Swansea to DeLand (Florida) | 825.47 mi (1,328.47 km) |
| Swansea to Delano (California) | 1,616.74 mi (2,601.88 km) |
