| Llanelli to Dover (New Jersey) | 3,307.43 mi (5,322.80 km) |
| Llanelli to Dover (Ohio) | 3,604.53 mi (5,800.93 km) |
| Llanelli to Downers Grove (Illinois) | 3,805.83 mi (6,124.89 km) |
| Llanelli to Downey (California) | 5,303.38 mi (8,534.97 km) |
| Llanelli to Dranesville (Virginia) | 3,505.28 mi (5,641.20 km) |
| Llanelli to Draper (Utah) | 4,734.22 mi (7,619.00 km) |
| Llanelli to Drexel Heights (Arizona) | 5,156.69 mi (8,298.89 km) |
| Llanelli to Drexel Hill (Pennsylvania) | 3,378.32 mi (5,436.88 km) |
| Llanelli to Duarte (California) | 5,284.83 mi (8,505.10 km) |
| Llanelli to Dublin (California) | 5,210.96 mi (8,386.23 km) |
| Llanelli to Dublin (Georgia) | 4,035.82 mi (6,495.02 km) |
| Llanelli to Dublin (Ohio) | 3,690.11 mi (5,938.66 km) |
| Llanelli to Dubuque (Iowa) | 3,876.69 mi (6,238.94 km) |
| Llanelli to Duluth (Georgia) | 4,015.54 mi (6,462.39 km) |
| Llanelli to Duluth (Minnesota) | 3,736.27 mi (6,012.94 km) |
