| Llantwit Major to Dixon (Illinois) | 3,895.01 mi (6,268.42 km) |
| Llantwit Major to Dobbs Ferry (New York) | 3,307.39 mi (5,322.73 km) |
| Llantwit Major to Doctor Phillips (Florida) | 4,208.43 mi (6,772.82 km) |
| Llantwit Major to Dodge City (Kansas) | 4,491.91 mi (7,229.03 km) |
| Llantwit Major to Dolton (Illinois) | 3,832.07 mi (6,167.12 km) |
| Llantwit Major to Donna (Texas) | 5,013.43 mi (8,068.34 km) |
| Llantwit Major to Dorado (Puerto Rico) | 4,062.65 mi (6,538.21 km) |
| Llantwit Major to Doral (Florida) | 4,291.24 mi (6,906.08 km) |
| Llantwit Major to Doraville (Georgia) | 4,059.03 mi (6,532.38 km) |
| Llantwit Major to Dothan (Alabama) | 4,235.82 mi (6,816.89 km) |
| Llantwit Major to Douglas (Arizona) | 5,179.81 mi (8,336.10 km) |
| Llantwit Major to Douglas (Georgia) | 4,115.94 mi (6,623.97 km) |
| Llantwit Major to Douglasville (Georgia) | 4,085.07 mi (6,574.28 km) |
| Llantwit Major to Dover (Delaware) | 3,455.25 mi (5,560.68 km) |
| Llantwit Major to Dover (New Hampshire) | 3,095.03 mi (4,980.96 km) |
