| Bargoed to Joliet (Illinois) | 3,859.10 mi (6,210.63 km) |
| Bargoed to Jonesboro (Arkansas) | 4,228.79 mi (6,805.57 km) |
| Bargoed to Joplin (Missouri) | 4,316.49 mi (6,946.72 km) |
| Bargoed to Joppatowne (Maryland) | 3,482.58 mi (5,604.67 km) |
| Bargoed to Juana Díaz (Puerto Rico) | 4,107.45 mi (6,610.29 km) |
| Bargoed to Junction City (Kansas) | 4,309.29 mi (6,935.13 km) |
| Bargoed to Juneau (Alaska) | 4,342.96 mi (6,989.32 km) |
| Bargoed to Jupiter (Florida) | 4,232.86 mi (6,812.13 km) |
| Bargoed to Jupiter Farms (Florida) | 4,237.25 mi (6,819.19 km) |
| Bargoed to Jurupa Valley (California) | 5,308.32 mi (8,542.91 km) |
| Bargoed to Justice (Illinois) | 3,836.34 mi (6,173.99 km) |
| Bargoed to Kahului (Hawaii) | 7,167.90 mi (11,535.62 km) |
| Bargoed to Kailua (Hawaii) | 7,156.56 mi (11,517.37 km) |
| Bargoed to Kalamazoo (Michigan) | 3,725.52 mi (5,995.64 km) |
| Bargoed to Kalispell (Montana) | 4,430.33 mi (7,129.93 km) |
