| Prospect Heights to Leland (North Carolina) | 765.23 mi (1,231.52 km) |
| Prospect Heights to Lemay (Missouri) | 276.23 mi (444.55 km) |
| Prospect Heights to Lemon Grove (California) | 1,712.98 mi (2,756.77 km) |
| Prospect Heights to Lemon Hill (California) | 1,772.38 mi (2,852.37 km) |
| Prospect Heights to Lemont (Illinois) | 30.16 mi (48.53 km) |
| Prospect Heights to Lemoore (California) | 1,742.25 mi (2,803.87 km) |
| Prospect Heights to Lenexa (Kansas) | 421.11 mi (677.71 km) |
| Prospect Heights to Lennox (California) | 1,738.99 mi (2,798.63 km) |
| Prospect Heights to Lenoir (North Carolina) | 548.57 mi (882.84 km) |
| Prospect Heights to Leominster (Massachusetts) | 824.67 mi (1,327.18 km) |
| Prospect Heights to Leon Valley (Texas) | 1,055.25 mi (1,698.27 km) |
| Prospect Heights to Levelland (Texas) | 981.25 mi (1,579.16 km) |
| Prospect Heights to Levittown (New York) | 752.04 mi (1,210.28 km) |
| Prospect Heights to Levittown (Pennsylvania) | 692.88 mi (1,115.08 km) |
| Prospect Heights to Lewisburg (Tennessee) | 463.72 mi (746.28 km) |
