| Greenock to Joliet (Illinois) | 3,683.23 mi (5,927.59 km) |
| Greenock to Jonesboro (Arkansas) | 4,066.22 mi (6,543.95 km) |
| Greenock to Joplin (Missouri) | 4,138.47 mi (6,660.22 km) |
| Greenock to Joppatowne (Maryland) | 3,350.40 mi (5,391.94 km) |
| Greenock to Juana Díaz (Puerto Rico) | 4,105.13 mi (6,606.57 km) |
| Greenock to Junction City (Kansas) | 4,118.56 mi (6,628.18 km) |
| Greenock to Juneau (Alaska) | 4,052.89 mi (6,522.50 km) |
| Greenock to Jupiter (Florida) | 4,139.17 mi (6,661.34 km) |
| Greenock to Jupiter Farms (Florida) | 4,143.14 mi (6,667.74 km) |
| Greenock to Jurupa Valley (California) | 5,077.77 mi (8,171.89 km) |
| Greenock to Justice (Illinois) | 3,660.45 mi (5,890.93 km) |
| Greenock to Kahului (Hawaii) | 6,876.33 mi (11,066.39 km) |
| Greenock to Kailua (Hawaii) | 6,863.37 mi (11,045.53 km) |
| Greenock to Kalamazoo (Michigan) | 3,553.68 mi (5,719.10 km) |
| Greenock to Kalispell (Montana) | 4,178.03 mi (6,723.89 km) |
