| London Colney to Jacksonville (Texas) | 4,717.35 mi (7,591.85 km) |
| London Colney to Jacksonville Beach (Florida) | 4,243.00 mi (6,828.45 km) |
| London Colney to James Island (South Carolina) | 4,061.73 mi (6,536.73 km) |
| London Colney to Jamestown (New York) | 3,598.70 mi (5,791.55 km) |
| London Colney to Jamestown (North Dakota) | 4,092.81 mi (6,586.73 km) |
| London Colney to Janesville (Wisconsin) | 3,948.55 mi (6,354.57 km) |
| London Colney to Jasmine Estates (Florida) | 4,395.70 mi (7,074.20 km) |
| London Colney to Jasper (Alabama) | 4,306.11 mi (6,930.01 km) |
| London Colney to Jasper (Indiana) | 4,071.98 mi (6,553.22 km) |
| London Colney to Jefferson (Georgia) | 4,143.98 mi (6,669.09 km) |
| London Colney to Jefferson (Louisiana) | 4,617.68 mi (7,431.44 km) |
| London Colney to Jefferson City (Missouri) | 4,265.34 mi (6,864.40 km) |
| London Colney to Jefferson Hills (Pennsylvania) | 3,706.88 mi (5,965.64 km) |
| London Colney to Jefferson Valley-Yorktown (New York) | 3,414.91 mi (5,495.76 km) |
| London Colney to Jeffersontown (Kentucky) | 4,027.19 mi (6,481.14 km) |
