| Ontario to Lapua | 5,390.72 mi (8,675.53 km) |
| Ontario to Laukaa | 5,471.81 mi (8,806.03 km) |
| Ontario to Lauritsala | 5,589.79 mi (8,995.89 km) |
| Ontario to Lempaala | 5,500.19 mi (8,851.71 km) |
| Ontario to Leppavirta | 5,496.06 mi (8,845.05 km) |
| Ontario to Lieksa | 5,478.23 mi (8,816.36 km) |
| Ontario to Lieto | 5,524.64 mi (8,891.04 km) |
| Ontario to Liminka | 5,321.02 mi (8,563.35 km) |
| Ontario to Liperi | 5,517.36 mi (8,879.34 km) |
| Ontario to Lohja | 5,568.58 mi (8,961.77 km) |
| Ontario to Loimaa | 5,515.30 mi (8,876.01 km) |
| Ontario to Loviisa | 5,593.81 mi (9,002.36 km) |
| Ontario to Mantsala | 5,567.76 mi (8,960.44 km) |
| Ontario to Mariehamn | 5,499.86 mi (8,851.16 km) |
| Ontario to Masku | 5,514.08 mi (8,874.06 km) |
