| Harmanli to Catania | 650.37 mi (1,046.67 km) |
| Harmanli to Catanzaro | 531.85 mi (855.92 km) |
| Harmanli to Cattolica | 679.75 mi (1,093.95 km) |
| Harmanli to Cava de' Tirreni | 586.99 mi (944.67 km) |
| Harmanli to Cavallino | 415.86 mi (669.27 km) |
| Harmanli to Cavarzere | 725.60 mi (1,167.75 km) |
| Harmanli to Cave | 666.51 mi (1,072.65 km) |
| Harmanli to Cavriago | 794.46 mi (1,278.56 km) |
| Harmanli to Cavriglia | 738.92 mi (1,189.18 km) |
| Harmanli to Cazzago San Martino | 829.69 mi (1,335.26 km) |
| Harmanli to Ceccano | 647.70 mi (1,042.37 km) |
| Harmanli to Cecina | 786.75 mi (1,266.15 km) |
| Harmanli to Cefalu | 683.62 mi (1,100.18 km) |
| Harmanli to Ceglie Messapico | 444.80 mi (715.84 km) |
| Harmanli to Celano | 633.18 mi (1,019.01 km) |
