| Didcot to Joliet (Illinois) | 3,938.49 mi (6,338.39 km) |
| Didcot to Jonesboro (Arkansas) | 4,309.89 mi (6,936.10 km) |
| Didcot to Joplin (Missouri) | 4,395.73 mi (7,074.25 km) |
| Didcot to Joppatowne (Maryland) | 3,566.20 mi (5,739.25 km) |
| Didcot to Juana Díaz (Puerto Rico) | 4,191.27 mi (6,745.20 km) |
| Didcot to Junction City (Kansas) | 4,386.68 mi (7,059.68 km) |
| Didcot to Juneau (Alaska) | 4,385.56 mi (7,057.88 km) |
| Didcot to Jupiter (Florida) | 4,318.44 mi (6,949.87 km) |
| Didcot to Jupiter Farms (Florida) | 4,322.82 mi (6,956.91 km) |
| Didcot to Jurupa Valley (California) | 5,377.90 mi (8,654.89 km) |
| Didcot to Justice (Illinois) | 3,915.72 mi (6,301.74 km) |
| Didcot to Kahului (Hawaii) | 7,209.07 mi (11,601.87 km) |
| Didcot to Kailua (Hawaii) | 7,195.97 mi (11,580.79 km) |
| Didcot to Kalamazoo (Michigan) | 3,805.38 mi (6,124.17 km) |
| Didcot to Kalispell (Montana) | 4,493.16 mi (7,231.04 km) |
