| Llanelli to Jeffersonville (Indiana) | 3,873.81 mi (6,234.29 km) |
| Llanelli to Jenison (Michigan) | 3,670.94 mi (5,907.81 km) |
| Llanelli to Jenks (Oklahoma) | 4,391.36 mi (7,067.21 km) |
| Llanelli to Jennings (Missouri) | 4,036.37 mi (6,495.91 km) |
| Llanelli to Jensen Beach (Florida) | 4,183.05 mi (6,731.97 km) |
| Llanelli to Jericho (New York) | 3,269.66 mi (5,262.00 km) |
| Llanelli to Jerome (Idaho) | 4,701.63 mi (7,566.54 km) |
| Llanelli to Jersey City (New Jersey) | 3,294.34 mi (5,301.73 km) |
| Llanelli to Jessup (Maryland) | 3,474.11 mi (5,591.03 km) |
| Llanelli to Johns Creek (Georgia) | 4,016.40 mi (6,463.77 km) |
| Llanelli to Johnson City (New York) | 3,312.45 mi (5,330.87 km) |
| Llanelli to Johnson City (Tennessee) | 3,832.20 mi (6,167.33 km) |
| Llanelli to Johnston (Iowa) | 4,028.46 mi (6,483.19 km) |
| Llanelli to Johnstown (Colorado) | 4,504.34 mi (7,249.04 km) |
| Llanelli to Johnstown (Pennsylvania) | 3,509.98 mi (5,648.77 km) |
