| Lemont to Johnstown (Pennsylvania) | 481.47 mi (774.85 km) |
| Lemont to Joliet (Illinois) | 13.49 mi (21.72 km) |
| Lemont to Jonesboro (Arkansas) | 429.33 mi (690.93 km) |
| Lemont to Joplin (Missouri) | 470.84 mi (757.75 km) |
| Lemont to Joppatowne (Maryland) | 629.69 mi (1,013.39 km) |
| Lemont to Juana Díaz (Puerto Rico) | 2,065.68 mi (3,324.38 km) |
| Lemont to Junction City (Kansas) | 501.02 mi (806.31 km) |
| Lemont to Juneau (Alaska) | 2,291.25 mi (3,687.41 km) |
| Lemont to Jupiter (Florida) | 1,112.49 mi (1,790.37 km) |
| Lemont to Jupiter Farms (Florida) | 1,109.95 mi (1,786.29 km) |
| Lemont to Jurupa Valley (California) | 1,684.37 mi (2,710.73 km) |
| Lemont to Justice (Illinois) | 9.48 mi (15.26 km) |
| Lemont to Kahului (Hawaii) | 4,177.81 mi (6,723.53 km) |
| Lemont to Kailua (Hawaii) | 4,222.14 mi (6,794.87 km) |
| Lemont to Kalamazoo (Michigan) | 129.97 mi (209.16 km) |
