| Northampton to Joliet (Illinois) | 3,932.19 mi (6,328.25 km) |
| Northampton to Jonesboro (Arkansas) | 4,306.06 mi (6,929.94 km) |
| Northampton to Joplin (Missouri) | 4,389.16 mi (7,063.68 km) |
| Northampton to Joppatowne (Maryland) | 3,567.26 mi (5,740.94 km) |
| Northampton to Juana Díaz (Puerto Rico) | 4,211.85 mi (6,778.32 km) |
| Northampton to Junction City (Kansas) | 4,377.76 mi (7,045.32 km) |
| Northampton to Juneau (Alaska) | 4,352.90 mi (7,005.31 km) |
| Northampton to Jupiter (Florida) | 4,325.95 mi (6,961.94 km) |
| Northampton to Jupiter Farms (Florida) | 4,330.27 mi (6,968.89 km) |
| Northampton to Jurupa Valley (California) | 5,361.10 mi (8,627.86 km) |
| Northampton to Justice (Illinois) | 3,909.41 mi (6,291.59 km) |
| Northampton to Kahului (Hawaii) | 7,175.49 mi (11,547.83 km) |
| Northampton to Kailua (Hawaii) | 7,161.68 mi (11,525.61 km) |
| Northampton to Kalamazoo (Michigan) | 3,799.76 mi (6,115.13 km) |
| Northampton to Kalispell (Montana) | 4,471.38 mi (7,195.98 km) |
