| Harmanli to Chojnow | 798.30 mi (1,284.74 km) |
| Harmanli to Chorzow | 666.39 mi (1,072.45 km) |
| Harmanli to Choszczno | 915.17 mi (1,472.82 km) |
| Harmanli to Chrzanow | 646.11 mi (1,039.81 km) |
| Harmanli to Ciechanow | 794.02 mi (1,277.86 km) |
| Harmanli to Ciechocinek | 825.55 mi (1,328.59 km) |
| Harmanli to Cieszyn | 642.77 mi (1,034.43 km) |
| Harmanli to Czarna Bialostocka | 794.62 mi (1,278.82 km) |
| Harmanli to Czarnkow | 872.74 mi (1,404.54 km) |
| Harmanli to Czechowice-Dziedzice | 642.61 mi (1,034.18 km) |
| Harmanli to Czeladz | 665.20 mi (1,070.54 km) |
| Harmanli to Czersk Pomorski | 896.69 mi (1,443.09 km) |
| Harmanli to Czestochowa | 692.06 mi (1,113.76 km) |
| Harmanli to Czluchow | 900.76 mi (1,449.63 km) |
| Harmanli to Dabrowa Gornicza | 662.10 mi (1,065.54 km) |
