| Boston to Lapua | 1,080.11 mi (1,738.26 km) |
| Boston to Laukaa | 1,147.38 mi (1,846.52 km) |
| Boston to Lauritsala | 1,188.63 mi (1,912.92 km) |
| Boston to Lempaala | 1,052.02 mi (1,693.06 km) |
| Boston to Leppavirta | 1,203.91 mi (1,937.51 km) |
| Boston to Lieksa | 1,289.29 mi (2,074.91 km) |
| Boston to Lieto | 990.35 mi (1,593.82 km) |
| Boston to Liminka | 1,206.79 mi (1,942.14 km) |
| Boston to Liperi | 1,252.91 mi (2,016.36 km) |
| Boston to Lohja | 1,036.38 mi (1,667.90 km) |
| Boston to Loimaa | 1,018.44 mi (1,639.03 km) |
| Boston to Loviisa | 1,111.38 mi (1,788.60 km) |
| Boston to Mantsala | 1,085.09 mi (1,746.29 km) |
| Boston to Mariehamn | 900.26 mi (1,448.82 km) |
| Boston to Masku | 981.17 mi (1,579.04 km) |
