| Prospect Heights to La Crescenta-Montrose (California) | 1,723.30 mi (2,773.39 km) |
| Prospect Heights to La Crosse (Wisconsin) | 204.83 mi (329.65 km) |
| Prospect Heights to La Grande (Oregon) | 1,513.48 mi (2,435.72 km) |
| Prospect Heights to La Grange (Illinois) | 20.68 mi (33.28 km) |
| Prospect Heights to La Grange Park (Illinois) | 19.08 mi (30.70 km) |
| Prospect Heights to La Habra (California) | 1,718.70 mi (2,765.97 km) |
| Prospect Heights to La Homa (Texas) | 1,243.01 mi (2,000.43 km) |
| Prospect Heights to La Marque (Texas) | 964.20 mi (1,551.73 km) |
| Prospect Heights to La Mesa (California) | 1,710.97 mi (2,753.54 km) |
| Prospect Heights to La Mirada (California) | 1,722.46 mi (2,772.03 km) |
| Prospect Heights to La Palma (California) | 1,725.74 mi (2,777.31 km) |
| Prospect Heights to La Porte (Indiana) | 71.22 mi (114.62 km) |
| Prospect Heights to La Porte (Texas) | 946.27 mi (1,522.88 km) |
| Prospect Heights to La Presa (California) | 1,712.17 mi (2,755.47 km) |
| Prospect Heights to La Puente (California) | 1,715.42 mi (2,760.70 km) |
