| Llantrisant to Desert Hot Springs (California) | 5,281.71 mi (8,500.09 km) |
| Llantrisant to DeSoto (Texas) | 4,632.38 mi (7,455.10 km) |
| Llantrisant to Destin (Florida) | 4,323.04 mi (6,957.27 km) |
| Llantrisant to Destrehan (Louisiana) | 4,505.29 mi (7,250.57 km) |
| Llantrisant to Detroit (Michigan) | 3,622.32 mi (5,829.55 km) |
| Llantrisant to Diamond Bar (California) | 5,321.88 mi (8,564.73 km) |
| Llantrisant to Diamond Springs (California) | 5,154.01 mi (8,294.58 km) |
| Llantrisant to Dickinson (North Dakota) | 4,135.80 mi (6,655.92 km) |
| Llantrisant to Dickinson (Texas) | 4,721.62 mi (7,598.72 km) |
| Llantrisant to Dickson (Tennessee) | 4,083.12 mi (6,571.15 km) |
| Llantrisant to Difficult Run (Virginia) | 3,543.74 mi (5,703.09 km) |
| Llantrisant to Dinuba (California) | 5,230.11 mi (8,417.05 km) |
| Llantrisant to Discovery Bay (California) | 5,222.10 mi (8,404.16 km) |
| Llantrisant to Dix Hills (New York) | 3,295.76 mi (5,304.01 km) |
| Llantrisant to Dixon (California) | 5,198.24 mi (8,365.76 km) |
