| Cwmbran to Jeffersonville (Indiana) | 3,920.23 mi (6,308.99 km) |
| Cwmbran to Jenison (Michigan) | 3,716.07 mi (5,980.43 km) |
| Cwmbran to Jenks (Oklahoma) | 4,436.34 mi (7,139.61 km) |
| Cwmbran to Jennings (Missouri) | 4,081.84 mi (6,569.08 km) |
| Cwmbran to Jensen Beach (Florida) | 4,231.80 mi (6,810.43 km) |
| Cwmbran to Jericho (New York) | 3,317.32 mi (5,338.72 km) |
| Cwmbran to Jerome (Idaho) | 4,739.21 mi (7,627.02 km) |
| Cwmbran to Jersey City (New Jersey) | 3,341.95 mi (5,378.36 km) |
| Cwmbran to Jessup (Maryland) | 3,521.70 mi (5,667.63 km) |
| Cwmbran to Johns Creek (Georgia) | 4,063.95 mi (6,540.29 km) |
| Cwmbran to Johnson City (New York) | 3,359.48 mi (5,406.56 km) |
| Cwmbran to Johnson City (Tennessee) | 3,879.58 mi (6,243.59 km) |
| Cwmbran to Johnston (Iowa) | 4,072.30 mi (6,553.74 km) |
| Cwmbran to Johnstown (Colorado) | 4,545.75 mi (7,315.68 km) |
| Cwmbran to Johnstown (Pennsylvania) | 3,557.02 mi (5,724.47 km) |
