| Keystone to Johnstown (Pennsylvania) | 868.18 mi (1,397.21 km) |
| Keystone to Joliet (Illinois) | 976.51 mi (1,571.54 km) |
| Keystone to Jonesboro (Arkansas) | 711.12 mi (1,144.44 km) |
| Keystone to Joplin (Missouri) | 926.91 mi (1,491.72 km) |
| Keystone to Joppatowne (Maryland) | 857.86 mi (1,380.59 km) |
| Keystone to Juana Díaz (Puerto Rico) | 1,235.36 mi (1,988.12 km) |
| Keystone to Junction City (Kansas) | 1,110.84 mi (1,787.72 km) |
| Keystone to Juneau (Alaska) | 3,211.71 mi (5,168.74 km) |
| Keystone to Jupiter (Florida) | 173.85 mi (279.78 km) |
| Keystone to Jupiter Farms (Florida) | 168.10 mi (270.54 km) |
| Keystone to Jurupa Valley (California) | 2,092.83 mi (3,368.08 km) |
| Keystone to Justice (Illinois) | 986.01 mi (1,586.83 km) |
| Keystone to Kahului (Hawaii) | 4,602.10 mi (7,406.36 km) |
| Keystone to Kailua (Hawaii) | 4,664.32 mi (7,506.50 km) |
| Keystone to Kalamazoo (Michigan) | 991.51 mi (1,595.68 km) |
