| Southborough to Jacksonville (Texas) | 4,755.86 mi (7,653.82 km) |
| Southborough to Jacksonville Beach (Florida) | 4,276.09 mi (6,881.71 km) |
| Southborough to James Island (South Carolina) | 4,095.37 mi (6,590.86 km) |
| Southborough to Jamestown (New York) | 3,636.39 mi (5,852.21 km) |
| Southborough to Jamestown (North Dakota) | 4,136.19 mi (6,656.55 km) |
| Southborough to Janesville (Wisconsin) | 3,988.92 mi (6,419.54 km) |
| Southborough to Jasmine Estates (Florida) | 4,428.43 mi (7,126.87 km) |
| Southborough to Jasper (Alabama) | 4,342.78 mi (6,989.03 km) |
| Southborough to Jasper (Indiana) | 4,110.29 mi (6,614.87 km) |
| Southborough to Jefferson (Georgia) | 4,179.54 mi (6,726.33 km) |
| Southborough to Jefferson (Louisiana) | 4,653.87 mi (7,489.67 km) |
| Southborough to Jefferson City (Missouri) | 4,305.11 mi (6,928.40 km) |
| Southborough to Jefferson Hills (Pennsylvania) | 3,743.95 mi (6,025.30 km) |
| Southborough to Jefferson Valley-Yorktown (New York) | 3,450.63 mi (5,553.25 km) |
| Southborough to Jeffersontown (Kentucky) | 4,065.03 mi (6,542.04 km) |
