| Prospect Heights to La Quinta (California) | 1,643.40 mi (2,644.80 km) |
| Prospect Heights to La Riviera (California) | 1,765.98 mi (2,842.07 km) |
| Prospect Heights to La Vergne (Tennessee) | 426.70 mi (686.71 km) |
| Prospect Heights to La Verne (California) | 1,703.30 mi (2,741.20 km) |
| Prospect Heights to La Vista (Nebraska) | 424.92 mi (683.84 km) |
| Prospect Heights to Lacey (Washington) | 1,734.63 mi (2,791.62 km) |
| Prospect Heights to Lackawanna (New York) | 465.94 mi (749.86 km) |
| Prospect Heights to Laconia (New Hampshire) | 838.15 mi (1,348.86 km) |
| Prospect Heights to Ladera Ranch (California) | 1,715.52 mi (2,760.87 km) |
| Prospect Heights to Ladson (South Carolina) | 759.67 mi (1,222.57 km) |
| Prospect Heights to Lady Lake (Florida) | 970.41 mi (1,561.72 km) |
| Prospect Heights to Lafayette (California) | 1,820.62 mi (2,930.01 km) |
| Prospect Heights to Lafayette (Colorado) | 905.02 mi (1,456.49 km) |
| Prospect Heights to Lafayette (Indiana) | 130.18 mi (209.51 km) |
| Prospect Heights to Lafayette (Louisiana) | 852.94 mi (1,372.67 km) |
