| Lake Ronkonkoma to Lapua | 3,933.17 mi (6,329.82 km) |
| Lake Ronkonkoma to Laukaa | 4,033.53 mi (6,491.34 km) |
| Lake Ronkonkoma to Lauritsala | 4,145.35 mi (6,671.29 km) |
| Lake Ronkonkoma to Lempaala | 4,006.17 mi (6,447.31 km) |
| Lake Ronkonkoma to Leppavirta | 4,082.18 mi (6,569.64 km) |
| Lake Ronkonkoma to Lieksa | 4,113.52 mi (6,620.07 km) |
| Lake Ronkonkoma to Lieto | 3,993.32 mi (6,426.64 km) |
| Lake Ronkonkoma to Liminka | 3,942.00 mi (6,344.03 km) |
| Lake Ronkonkoma to Liperi | 4,124.53 mi (6,637.79 km) |
| Lake Ronkonkoma to Lohja | 4,050.24 mi (6,518.22 km) |
| Lake Ronkonkoma to Loimaa | 4,000.56 mi (6,438.28 km) |
| Lake Ronkonkoma to Loviisa | 4,107.88 mi (6,610.99 km) |
| Lake Ronkonkoma to Mantsala | 4,074.83 mi (6,557.80 km) |
| Lake Ronkonkoma to Mariehamn | 3,928.37 mi (6,322.10 km) |
| Lake Ronkonkoma to Masku | 3,980.51 mi (6,406.02 km) |
