| Llantrisant to Dixon (Illinois) | 3,894.62 mi (6,267.79 km) |
| Llantrisant to Dobbs Ferry (New York) | 3,308.85 mi (5,325.08 km) |
| Llantrisant to Doctor Phillips (Florida) | 4,211.01 mi (6,776.97 km) |
| Llantrisant to Dodge City (Kansas) | 4,490.95 mi (7,227.49 km) |
| Llantrisant to Dolton (Illinois) | 3,831.91 mi (6,166.87 km) |
| Llantrisant to Donna (Texas) | 5,014.21 mi (8,069.59 km) |
| Llantrisant to Dorado (Puerto Rico) | 4,068.45 mi (6,547.53 km) |
| Llantrisant to Doral (Florida) | 4,294.32 mi (6,911.03 km) |
| Llantrisant to Doraville (Georgia) | 4,060.47 mi (6,534.70 km) |
| Llantrisant to Dothan (Alabama) | 4,237.52 mi (6,819.62 km) |
| Llantrisant to Douglas (Arizona) | 5,178.51 mi (8,334.01 km) |
| Llantrisant to Douglas (Georgia) | 4,117.91 mi (6,627.14 km) |
| Llantrisant to Douglasville (Georgia) | 4,086.49 mi (6,576.56 km) |
| Llantrisant to Dover (Delaware) | 3,456.86 mi (5,563.28 km) |
| Llantrisant to Dover (New Hampshire) | 3,096.37 mi (4,983.13 km) |
