| Prospect Heights to Laredo (Texas) | 1,197.15 mi (1,926.62 km) |
| Prospect Heights to Largo (Florida) | 1,022.73 mi (1,645.92 km) |
| Prospect Heights to Largo (Maryland) | 623.64 mi (1,003.66 km) |
| Prospect Heights to Larkspur (California) | 1,840.62 mi (2,962.19 km) |
| Prospect Heights to Las Cruces (New Mexico) | 1,234.04 mi (1,986.00 km) |
| Prospect Heights to Las Vegas (Nevada) | 1,512.33 mi (2,433.87 km) |
| Prospect Heights to Las Vegas (New Mexico) | 1,030.74 mi (1,658.82 km) |
| Prospect Heights to Latham (New York) | 723.57 mi (1,164.47 km) |
| Prospect Heights to Lathrop (California) | 1,781.31 mi (2,866.74 km) |
| Prospect Heights to Lauderdale Lakes (Florida) | 1,185.07 mi (1,907.18 km) |
| Prospect Heights to Lauderhill (Florida) | 1,185.10 mi (1,907.23 km) |
| Prospect Heights to Laurel (Florida) | 1,078.38 mi (1,735.48 km) |
| Prospect Heights to Laurel (Maryland) | 616.00 mi (991.36 km) |
| Prospect Heights to Laurel (Mississippi) | 722.26 mi (1,162.37 km) |
| Prospect Heights to Laurel (Virginia) | 632.26 mi (1,017.53 km) |
