| Hartford to Kluczbork | 4,099.03 mi (6,596.76 km) |
| Hartford to Knurow | 4,143.37 mi (6,668.11 km) |
| Hartford to Kobylka | 4,162.05 mi (6,698.18 km) |
| Hartford to Kokoszki | 3,995.93 mi (6,430.83 km) |
| Hartford to Kolbuszowa | 4,258.45 mi (6,853.31 km) |
| Hartford to Kolno | 4,150.02 mi (6,678.81 km) |
| Hartford to Kolo | 4,072.94 mi (6,554.76 km) |
| Hartford to Kolobrzeg | 3,897.11 mi (6,271.79 km) |
| Hartford to Koluszki | 4,131.48 mi (6,648.98 km) |
| Hartford to Komorniki | 3,999.08 mi (6,435.90 km) |
| Hartford to Konin | 4,058.84 mi (6,532.08 km) |
| Hartford to Konskie | 4,173.72 mi (6,716.96 km) |
| Hartford to Konstancin-Jeziorna | 4,167.94 mi (6,707.64 km) |
| Hartford to Konstantynow Lodzki | 4,114.25 mi (6,621.24 km) |
| Hartford to Koronowo | 4,009.95 mi (6,453.39 km) |
