| Hartford to Koscian | 4,003.23 mi (6,442.57 km) |
| Hartford to Koscielisko | 4,222.55 mi (6,795.55 km) |
| Hartford to Koscierzyna | 3,985.58 mi (6,414.17 km) |
| Hartford to Kostrzyn | 4,014.29 mi (6,460.37 km) |
| Hartford to Kostrzyn nad Odra | 3,912.86 mi (6,297.15 km) |
| Hartford to Koszalin | 3,918.30 mi (6,305.90 km) |
| Hartford to Kowary | 4,014.84 mi (6,461.26 km) |
| Hartford to Kozienice | 4,202.31 mi (6,762.96 km) |
| Hartford to Kozuchow | 3,974.62 mi (6,396.54 km) |
| Hartford to Kozy | 4,173.53 mi (6,716.65 km) |
| Hartford to Krakow | 4,196.51 mi (6,753.63 km) |
| Hartford to Krapkowice | 4,107.37 mi (6,610.17 km) |
| Hartford to Krasnik | 4,250.52 mi (6,840.56 km) |
| Hartford to Krasnystaw | 4,283.51 mi (6,893.65 km) |
| Hartford to Krosno | 4,278.83 mi (6,886.11 km) |
