| Boston to Klaukkala | 1,061.41 mi (1,708.18 km) |
| Boston to Kokkola | 1,113.63 mi (1,792.21 km) |
| Boston to Kontiolahti | 1,272.03 mi (2,047.13 km) |
| Boston to Korsholm | 1,049.15 mi (1,688.44 km) |
| Boston to Kotka | 1,134.79 mi (1,826.27 km) |
| Boston to Kouvola | 1,134.64 mi (1,826.03 km) |
| Boston to Kuhmo | 1,295.07 mi (2,084.22 km) |
| Boston to Kuopio | 1,210.57 mi (1,948.22 km) |
| Boston to Kurikka | 1,051.47 mi (1,692.17 km) |
| Boston to Kuusamo | 1,340.40 mi (2,157.17 km) |
| Boston to Kuusankoski | 1,132.85 mi (1,823.14 km) |
| Boston to Lahti | 1,103.31 mi (1,775.60 km) |
| Boston to Laitila | 977.31 mi (1,572.82 km) |
| Boston to Lapinlahti | 1,214.60 mi (1,954.71 km) |
| Boston to Lappeenranta | 1,186.10 mi (1,908.84 km) |
