| Boston to Kluczbork | 786.04 mi (1,265.01 km) |
| Boston to Knurow | 822.56 mi (1,323.78 km) |
| Boston to Kobylka | 887.33 mi (1,428.02 km) |
| Boston to Kokoszki | 761.63 mi (1,225.72 km) |
| Boston to Kolbuszowa | 949.69 mi (1,528.37 km) |
| Boston to Kolno | 905.77 mi (1,457.70 km) |
| Boston to Kolo | 782.69 mi (1,259.62 km) |
| Boston to Kolobrzeg | 643.92 mi (1,036.28 km) |
| Boston to Koluszki | 837.89 mi (1,348.45 km) |
| Boston to Komorniki | 701.50 mi (1,128.95 km) |
| Boston to Konin | 767.24 mi (1,234.76 km) |
| Boston to Konskie | 873.27 mi (1,405.39 km) |
| Boston to Konstancin-Jeziorna | 887.41 mi (1,428.15 km) |
| Boston to Konstantynow Lodzki | 818.48 mi (1,317.22 km) |
| Boston to Koronowo | 742.48 mi (1,194.91 km) |
