| Prospect Heights to Lewiston (Idaho) | 1,460.09 mi (2,349.78 km) |
| Prospect Heights to Lewiston (Maine) | 904.58 mi (1,455.79 km) |
| Prospect Heights to Lewisville (North Carolina) | 577.51 mi (929.41 km) |
| Prospect Heights to Lewisville (Texas) | 797.48 mi (1,283.42 km) |
| Prospect Heights to Lexington (Kentucky) | 335.15 mi (539.37 km) |
| Prospect Heights to Lexington (Nebraska) | 618.49 mi (995.36 km) |
| Prospect Heights to Lexington (North Carolina) | 598.61 mi (963.36 km) |
| Prospect Heights to Lexington (South Carolina) | 668.46 mi (1,075.78 km) |
| Prospect Heights to Lexington Park (Maryland) | 661.36 mi (1,064.36 km) |
| Prospect Heights to Liberal (Kansas) | 774.49 mi (1,246.43 km) |
| Prospect Heights to Liberty (Missouri) | 393.44 mi (633.19 km) |
| Prospect Heights to Liberty Lake (Washington) | 1,469.48 mi (2,364.90 km) |
| Prospect Heights to Liberty Triangle (Florida) | 954.96 mi (1,536.85 km) |
| Prospect Heights to Libertyville (Illinois) | 12.82 mi (20.63 km) |
| Prospect Heights to Lighthouse Point (Florida) | 1,180.29 mi (1,899.49 km) |
