| Harmanli to Kalisz | 771.84 mi (1,242.15 km) |
| Harmanli to Kamien Pomorski | 975.58 mi (1,570.05 km) |
| Harmanli to Kamienna Gora | 770.12 mi (1,239.38 km) |
| Harmanli to Karczew | 734.33 mi (1,181.79 km) |
| Harmanli to Kartuzy | 926.10 mi (1,490.42 km) |
| Harmanli to Katowice | 662.87 mi (1,066.78 km) |
| Harmanli to Kedzierzyn-Kozle | 687.69 mi (1,106.74 km) |
| Harmanli to Kepno | 746.37 mi (1,201.16 km) |
| Harmanli to Ketrzyn | 864.60 mi (1,391.45 km) |
| Harmanli to Kety | 636.74 mi (1,024.73 km) |
| Harmanli to Kielce | 666.34 mi (1,072.38 km) |
| Harmanli to Kielczow | 758.13 mi (1,220.09 km) |
| Harmanli to Klobuck | 703.07 mi (1,131.48 km) |
| Harmanli to Klodzko | 734.14 mi (1,181.48 km) |
| Harmanli to Kluczbork | 723.48 mi (1,164.33 km) |
