| Prospect Heights to Lindon (Utah) | 1,238.39 mi (1,993.00 km) |
| Prospect Heights to Lindsay (California) | 1,708.34 mi (2,749.30 km) |
| Prospect Heights to Linganore (Maryland) | 585.87 mi (942.87 km) |
| Prospect Heights to Lino Lakes (Minnesota) | 333.50 mi (536.71 km) |
| Prospect Heights to Linthicum (Maryland) | 622.81 mi (1,002.32 km) |
| Prospect Heights to Linton Hall (Virginia) | 591.05 mi (951.21 km) |
| Prospect Heights to Lisle (Illinois) | 23.12 mi (37.20 km) |
| Prospect Heights to Lithia Springs (Georgia) | 602.02 mi (968.85 km) |
| Prospect Heights to Little Canada (Minnesota) | 327.67 mi (527.34 km) |
| Prospect Heights to Little Chute (Wisconsin) | 152.38 mi (245.24 km) |
| Prospect Heights to Little Elm (Texas) | 787.85 mi (1,267.93 km) |
| Prospect Heights to Little Ferry (New Jersey) | 723.36 mi (1,164.13 km) |
| Prospect Heights to Little Rock (Arkansas) | 563.20 mi (906.38 km) |
| Prospect Heights to Littleton (Colorado) | 908.41 mi (1,461.95 km) |
| Prospect Heights to Live Oak (California) | 1,835.86 mi (2,954.53 km) |
