| Willimantic to Johnstown (Pennsylvania) | 362.54 mi (583.45 km) |
| Willimantic to Joliet (Illinois) | 822.22 mi (1,323.23 km) |
| Willimantic to Jonesboro (Arkansas) | 1,072.27 mi (1,725.65 km) |
| Willimantic to Joplin (Missouri) | 1,228.71 mi (1,977.42 km) |
| Willimantic to Joppatowne (Maryland) | 269.12 mi (433.10 km) |
| Willimantic to Juana Díaz (Puerto Rico) | 1,669.37 mi (2,686.59 km) |
| Willimantic to Junction City (Kansas) | 1,305.66 mi (2,101.26 km) |
| Willimantic to Juneau (Alaska) | 2,857.06 mi (4,598.00 km) |
| Willimantic to Jupiter (Florida) | 1,116.13 mi (1,796.24 km) |
| Willimantic to Jupiter Farms (Florida) | 1,118.41 mi (1,799.91 km) |
| Willimantic to Jurupa Valley (California) | 2,496.12 mi (4,017.12 km) |
| Willimantic to Justice (Illinois) | 804.44 mi (1,294.61 km) |
| Willimantic to Kahului (Hawaii) | 4,983.22 mi (8,019.72 km) |
| Willimantic to Kailua (Hawaii) | 5,025.01 mi (8,086.97 km) |
| Willimantic to Kalamazoo (Michigan) | 687.26 mi (1,106.05 km) |
