| Watertown Town to Klaukkala | 3,921.67 mi (6,311.32 km) |
| Watertown Town to Kokkola | 3,767.15 mi (6,062.64 km) |
| Watertown Town to Kontiolahti | 3,985.79 mi (6,414.51 km) |
| Watertown Town to Korsholm | 3,747.48 mi (6,030.99 km) |
| Watertown Town to Kotka | 3,984.03 mi (6,411.67 km) |
| Watertown Town to Kouvola | 3,963.25 mi (6,378.24 km) |
| Watertown Town to Kuhmo | 3,929.41 mi (6,323.78 km) |
| Watertown Town to Kuopio | 3,922.14 mi (6,312.07 km) |
| Watertown Town to Kurikka | 3,782.59 mi (6,087.49 km) |
| Watertown Town to Kuusamo | 3,858.78 mi (6,210.10 km) |
| Watertown Town to Kuusankoski | 3,959.52 mi (6,372.24 km) |
| Watertown Town to Lahti | 3,928.48 mi (6,322.27 km) |
| Watertown Town to Laitila | 3,813.98 mi (6,138.01 km) |
| Watertown Town to Lapinlahti | 3,898.21 mi (6,273.56 km) |
| Watertown Town to Lappeenranta | 3,999.26 mi (6,436.19 km) |
