| Dorchester to Joliet (Illinois) | 3,920.06 mi (6,308.72 km) |
| Dorchester to Jonesboro (Arkansas) | 4,287.05 mi (6,899.35 km) |
| Dorchester to Joplin (Missouri) | 4,377.57 mi (7,045.02 km) |
| Dorchester to Joppatowne (Maryland) | 3,535.55 mi (5,689.92 km) |
| Dorchester to Juana Díaz (Puerto Rico) | 4,131.29 mi (6,648.67 km) |
| Dorchester to Junction City (Kansas) | 4,372.65 mi (7,037.10 km) |
| Dorchester to Juneau (Alaska) | 4,418.73 mi (7,111.26 km) |
| Dorchester to Jupiter (Florida) | 4,277.25 mi (6,883.56 km) |
| Dorchester to Jupiter Farms (Florida) | 4,281.72 mi (6,890.77 km) |
| Dorchester to Jurupa Valley (California) | 5,377.94 mi (8,654.97 km) |
| Dorchester to Justice (Illinois) | 3,897.31 mi (6,272.11 km) |
| Dorchester to Kahului (Hawaii) | 7,243.64 mi (11,657.52 km) |
| Dorchester to Kailua (Hawaii) | 7,232.22 mi (11,639.14 km) |
| Dorchester to Kalamazoo (Michigan) | 3,785.82 mi (6,092.69 km) |
| Dorchester to Kalispell (Montana) | 4,503.18 mi (7,247.17 km) |
