| Cwmbran to Jacksonville (Texas) | 4,612.58 mi (7,423.23 km) |
| Cwmbran to Jacksonville Beach (Florida) | 4,130.43 mi (6,647.29 km) |
| Cwmbran to James Island (South Carolina) | 3,949.71 mi (6,356.45 km) |
| Cwmbran to Jamestown (New York) | 3,492.40 mi (5,620.47 km) |
| Cwmbran to Jamestown (North Dakota) | 4,003.28 mi (6,442.66 km) |
| Cwmbran to Janesville (Wisconsin) | 3,848.22 mi (6,193.10 km) |
| Cwmbran to Jasmine Estates (Florida) | 4,282.80 mi (6,892.49 km) |
| Cwmbran to Jasper (Alabama) | 4,198.04 mi (6,756.09 km) |
| Cwmbran to Jasper (Indiana) | 3,966.83 mi (6,383.99 km) |
| Cwmbran to Jefferson (Georgia) | 4,034.28 mi (6,492.54 km) |
| Cwmbran to Jefferson (Louisiana) | 4,508.85 mi (7,256.29 km) |
| Cwmbran to Jefferson City (Missouri) | 4,163.42 mi (6,700.37 km) |
| Cwmbran to Jefferson Hills (Pennsylvania) | 3,599.48 mi (5,792.80 km) |
| Cwmbran to Jefferson Valley-Yorktown (New York) | 3,305.44 mi (5,319.58 km) |
| Cwmbran to Jeffersontown (Kentucky) | 3,921.15 mi (6,310.48 km) |
