| Llanelli to Desert Hot Springs (California) | 5,249.03 mi (8,447.51 km) |
| Llanelli to DeSoto (Texas) | 4,597.49 mi (7,398.94 km) |
| Llanelli to Destin (Florida) | 4,287.85 mi (6,900.63 km) |
| Llanelli to Destrehan (Louisiana) | 4,470.09 mi (7,193.92 km) |
| Llanelli to Detroit (Michigan) | 3,587.38 mi (5,773.33 km) |
| Llanelli to Diamond Bar (California) | 5,289.42 mi (8,512.49 km) |
| Llanelli to Diamond Springs (California) | 5,122.82 mi (8,244.39 km) |
| Llanelli to Dickinson (North Dakota) | 4,103.24 mi (6,603.52 km) |
| Llanelli to Dickinson (Texas) | 4,686.51 mi (7,542.21 km) |
| Llanelli to Dickson (Tennessee) | 4,048.01 mi (6,514.64 km) |
| Llanelli to Difficult Run (Virginia) | 3,508.53 mi (5,646.44 km) |
| Llanelli to Dinuba (California) | 5,198.31 mi (8,365.86 km) |
| Llanelli to Discovery Bay (California) | 5,190.92 mi (8,353.98 km) |
| Llanelli to Dix Hills (New York) | 3,260.56 mi (5,247.36 km) |
| Llanelli to Dixon (California) | 5,167.20 mi (8,315.80 km) |
