| Grays to Joliet (Illinois) | 4,002.57 mi (6,441.52 km) |
| Grays to Jonesboro (Arkansas) | 4,375.13 mi (7,041.10 km) |
| Grays to Joplin (Missouri) | 4,459.68 mi (7,177.17 km) |
| Grays to Joppatowne (Maryland) | 3,633.15 mi (5,846.98 km) |
| Grays to Juana Díaz (Puerto Rico) | 4,257.12 mi (6,851.17 km) |
| Grays to Junction City (Kansas) | 4,449.32 mi (7,160.49 km) |
| Grays to Juneau (Alaska) | 4,422.23 mi (7,116.90 km) |
| Grays to Jupiter (Florida) | 4,386.50 mi (7,059.38 km) |
| Grays to Jupiter Farms (Florida) | 4,390.87 mi (7,066.42 km) |
| Grays to Jurupa Valley (California) | 5,434.77 mi (8,746.42 km) |
| Grays to Justice (Illinois) | 3,979.79 mi (6,404.86 km) |
| Grays to Kahului (Hawaii) | 7,243.90 mi (11,657.93 km) |
| Grays to Kailua (Hawaii) | 7,229.43 mi (11,634.65 km) |
| Grays to Kalamazoo (Michigan) | 3,869.80 mi (6,227.83 km) |
| Grays to Kalispell (Montana) | 4,545.11 mi (7,314.65 km) |
