| Watertown Town to Lapua | 3,789.39 mi (6,098.44 km) |
| Watertown Town to Laukaa | 3,889.82 mi (6,260.07 km) |
| Watertown Town to Lauritsala | 4,001.31 mi (6,439.49 km) |
| Watertown Town to Lempaala | 3,861.74 mi (6,214.88 km) |
| Watertown Town to Leppavirta | 3,938.74 mi (6,338.78 km) |
| Watertown Town to Lieksa | 3,970.81 mi (6,390.40 km) |
| Watertown Town to Lieto | 3,848.47 mi (6,193.52 km) |
| Watertown Town to Liminka | 3,799.50 mi (6,114.71 km) |
| Watertown Town to Liperi | 3,981.32 mi (6,407.31 km) |
| Watertown Town to Lohja | 3,905.44 mi (6,285.20 km) |
| Watertown Town to Loimaa | 3,855.89 mi (6,205.45 km) |
| Watertown Town to Loviisa | 3,963.37 mi (6,378.43 km) |
| Watertown Town to Mantsala | 3,930.29 mi (6,325.20 km) |
| Watertown Town to Mariehamn | 3,783.19 mi (6,088.46 km) |
| Watertown Town to Masku | 3,835.66 mi (6,172.89 km) |
