| Llanelli to Dumas (Texas) | 4,626.22 mi (7,445.17 km) |
| Llanelli to Dumont (New Jersey) | 3,281.56 mi (5,281.15 km) |
| Llanelli to Duncan (Oklahoma) | 4,539.98 mi (7,306.40 km) |
| Llanelli to Duncanville (Texas) | 4,597.04 mi (7,398.22 km) |
| Llanelli to Dundalk (Maryland) | 3,457.08 mi (5,563.63 km) |
| Llanelli to Dunedin (Florida) | 4,251.31 mi (6,841.82 km) |
| Llanelli to Dunkirk (New York) | 3,433.32 mi (5,525.39 km) |
| Llanelli to Dunmore (Pennsylvania) | 3,327.89 mi (5,355.71 km) |
| Llanelli to Dunwoody (Georgia) | 4,025.30 mi (6,478.10 km) |
| Llanelli to Durango (Colorado) | 4,768.56 mi (7,674.26 km) |
| Llanelli to Durant (Oklahoma) | 4,508.20 mi (7,255.25 km) |
| Llanelli to Durham (North Carolina) | 3,705.42 mi (5,963.30 km) |
| Llanelli to Dyer (Indiana) | 3,799.64 mi (6,114.93 km) |
| Llanelli to Dyersburg (Tennessee) | 4,129.52 mi (6,645.83 km) |
| Llanelli to Eagan (Minnesota) | 3,862.06 mi (6,215.38 km) |
