| Prospect Heights to Lapua | 4,251.01 mi (6,841.35 km) |
| Prospect Heights to Laukaa | 4,347.44 mi (6,996.53 km) |
| Prospect Heights to Lauritsala | 4,465.61 mi (7,186.71 km) |
| Prospect Heights to Lempaala | 4,340.98 mi (6,986.13 km) |
| Prospect Heights to Leppavirta | 4,388.33 mi (7,062.34 km) |
| Prospect Heights to Lieksa | 4,401.78 mi (7,083.98 km) |
| Prospect Heights to Lieto | 4,342.41 mi (6,988.43 km) |
| Prospect Heights to Liminka | 4,229.32 mi (6,806.44 km) |
| Prospect Heights to Liperi | 4,424.06 mi (7,119.84 km) |
| Prospect Heights to Lohja | 4,396.11 mi (7,074.86 km) |
| Prospect Heights to Loimaa | 4,343.34 mi (6,989.93 km) |
| Prospect Heights to Loviisa | 4,443.00 mi (7,150.32 km) |
| Prospect Heights to Mantsala | 4,411.56 mi (7,099.72 km) |
| Prospect Heights to Mariehamn | 4,291.25 mi (6,906.09 km) |
| Prospect Heights to Masku | 4,330.06 mi (6,968.55 km) |
