| Harmanli to Knurow | 668.01 mi (1,075.07 km) |
| Harmanli to Kobylka | 751.35 mi (1,209.19 km) |
| Harmanli to Kokoszki | 922.44 mi (1,484.53 km) |
| Harmanli to Kolbuszowa | 607.55 mi (977.76 km) |
| Harmanli to Kolno | 813.86 mi (1,309.78 km) |
| Harmanli to Kolo | 786.55 mi (1,265.83 km) |
| Harmanli to Kolobrzeg | 968.73 mi (1,559.02 km) |
| Harmanli to Koluszki | 736.36 mi (1,185.05 km) |
| Harmanli to Komorniki | 833.36 mi (1,341.17 km) |
| Harmanli to Konin | 795.11 mi (1,279.60 km) |
| Harmanli to Konskie | 690.74 mi (1,111.63 km) |
| Harmanli to Konstancin-Jeziorna | 736.20 mi (1,184.81 km) |
| Harmanli to Konstantynow Lodzki | 745.16 mi (1,199.22 km) |
| Harmanli to Koronowo | 868.35 mi (1,397.47 km) |
| Harmanli to Koscian | 824.20 mi (1,326.42 km) |
