| Thornton Heath to Joliet (Illinois) | 3,988.29 mi (6,418.52 km) |
| Thornton Heath to Jonesboro (Arkansas) | 4,360.14 mi (7,016.97 km) |
| Thornton Heath to Joplin (Missouri) | 4,445.47 mi (7,154.29 km) |
| Thornton Heath to Joppatowne (Maryland) | 3,616.91 mi (5,820.86 km) |
| Thornton Heath to Juana Díaz (Puerto Rico) | 4,237.76 mi (6,820.01 km) |
| Thornton Heath to Junction City (Kansas) | 4,435.83 mi (7,138.78 km) |
| Thornton Heath to Juneau (Alaska) | 4,419.06 mi (7,111.79 km) |
| Thornton Heath to Jupiter (Florida) | 4,368.87 mi (7,031.02 km) |
| Thornton Heath to Jupiter Farms (Florida) | 4,373.26 mi (7,038.08 km) |
| Thornton Heath to Jurupa Valley (California) | 5,424.03 mi (8,729.13 km) |
| Thornton Heath to Justice (Illinois) | 3,965.51 mi (6,381.87 km) |
| Thornton Heath to Kahului (Hawaii) | 7,241.41 mi (11,653.92 km) |
| Thornton Heath to Kailua (Hawaii) | 7,227.39 mi (11,631.37 km) |
| Thornton Heath to Kalamazoo (Michigan) | 3,855.31 mi (6,204.52 km) |
| Thornton Heath to Kalispell (Montana) | 4,536.40 mi (7,300.63 km) |
