| Greenock to Jeffersonville (Indiana) | 3,753.82 mi (6,041.19 km) |
| Greenock to Jenison (Michigan) | 3,531.51 mi (5,683.42 km) |
| Greenock to Jenks (Oklahoma) | 4,248.01 mi (6,836.51 km) |
| Greenock to Jennings (Missouri) | 3,900.70 mi (6,277.57 km) |
| Greenock to Jensen Beach (Florida) | 4,126.73 mi (6,641.34 km) |
| Greenock to Jericho (New York) | 3,177.95 mi (5,114.42 km) |
| Greenock to Jerome (Idaho) | 4,489.12 mi (7,224.54 km) |
| Greenock to Jersey City (New Jersey) | 3,201.23 mi (5,151.89 km) |
| Greenock to Jessup (Maryland) | 3,379.65 mi (5,439.02 km) |
| Greenock to Johns Creek (Georgia) | 3,918.77 mi (6,306.66 km) |
| Greenock to Johnson City (New York) | 3,206.14 mi (5,159.78 km) |
| Greenock to Johnson City (Tennessee) | 3,731.38 mi (6,005.08 km) |
| Greenock to Johnston (Iowa) | 3,871.68 mi (6,230.86 km) |
| Greenock to Johnstown (Colorado) | 4,321.65 mi (6,955.02 km) |
| Greenock to Johnstown (Pennsylvania) | 3,402.96 mi (5,476.53 km) |
