| Pontypridd to Joliet (Illinois) | 3,857.80 mi (6,208.53 km) |
| Pontypridd to Jonesboro (Arkansas) | 4,227.06 mi (6,802.80 km) |
| Pontypridd to Joplin (Missouri) | 4,315.21 mi (6,944.66 km) |
| Pontypridd to Joppatowne (Maryland) | 3,480.10 mi (5,600.68 km) |
| Pontypridd to Juana Díaz (Puerto Rico) | 4,102.12 mi (6,601.72 km) |
| Pontypridd to Junction City (Kansas) | 4,308.40 mi (6,933.71 km) |
| Pontypridd to Juneau (Alaska) | 4,346.46 mi (6,994.96 km) |
| Pontypridd to Jupiter (Florida) | 4,229.37 mi (6,806.52 km) |
| Pontypridd to Jupiter Farms (Florida) | 4,233.77 mi (6,813.60 km) |
| Pontypridd to Jurupa Valley (California) | 5,308.75 mi (8,543.61 km) |
| Pontypridd to Justice (Illinois) | 3,835.04 mi (6,171.90 km) |
| Pontypridd to Kahului (Hawaii) | 7,171.48 mi (11,541.38 km) |
| Pontypridd to Kailua (Hawaii) | 7,160.29 mi (11,523.37 km) |
| Pontypridd to Kalamazoo (Michigan) | 3,724.10 mi (5,993.37 km) |
| Pontypridd to Kalispell (Montana) | 4,431.71 mi (7,132.14 km) |
