| South Plainfield to Jeffersontown (Kentucky) | 617.26 mi (993.39 km) |
| South Plainfield to Jeffersonville (Indiana) | 621.19 mi (999.70 km) |
| South Plainfield to Jenison (Michigan) | 609.44 mi (980.80 km) |
| South Plainfield to Jenks (Oklahoma) | 1,207.74 mi (1,943.67 km) |
| South Plainfield to Jennings (Missouri) | 851.63 mi (1,370.56 km) |
| South Plainfield to Jensen Beach (Florida) | 979.20 mi (1,575.87 km) |
| South Plainfield to Jericho (New York) | 48.07 mi (77.37 km) |
| South Plainfield to Jerome (Idaho) | 2,056.23 mi (3,309.18 km) |
| South Plainfield to Jersey City (New Jersey) | 20.70 mi (33.32 km) |
| South Plainfield to Jessup (Maryland) | 159.36 mi (256.47 km) |
| South Plainfield to Johns Creek (Georgia) | 701.79 mi (1,129.42 km) |
| South Plainfield to Johnson City (New York) | 133.72 mi (215.20 km) |
| South Plainfield to Johnson City (Tennessee) | 520.54 mi (837.72 km) |
| South Plainfield to Johnston (Iowa) | 1,005.64 mi (1,618.42 km) |
| South Plainfield to Johnstown (Colorado) | 1,597.03 mi (2,570.16 km) |
