| Potters Bar to Joliet (Illinois) | 3,975.91 mi (6,398.61 km) |
| Potters Bar to Jonesboro (Arkansas) | 4,348.69 mi (6,998.54 km) |
| Potters Bar to Joplin (Missouri) | 4,433.00 mi (7,134.22 km) |
| Potters Bar to Joppatowne (Maryland) | 3,607.36 mi (5,805.49 km) |
| Potters Bar to Juana Díaz (Puerto Rico) | 4,237.07 mi (6,818.90 km) |
| Potters Bar to Junction City (Kansas) | 4,422.51 mi (7,117.34 km) |
| Potters Bar to Juneau (Alaska) | 4,399.04 mi (7,079.57 km) |
| Potters Bar to Jupiter (Florida) | 4,362.04 mi (7,020.03 km) |
| Potters Bar to Jupiter Farms (Florida) | 4,366.40 mi (7,027.04 km) |
| Potters Bar to Jurupa Valley (California) | 5,408.06 mi (8,703.43 km) |
| Potters Bar to Justice (Illinois) | 3,953.13 mi (6,361.95 km) |
| Potters Bar to Kahului (Hawaii) | 7,221.21 mi (11,621.41 km) |
| Potters Bar to Kailua (Hawaii) | 7,207.08 mi (11,598.67 km) |
| Potters Bar to Kalamazoo (Michigan) | 3,843.18 mi (6,185.01 km) |
| Potters Bar to Kalispell (Montana) | 4,518.95 mi (7,272.55 km) |
