| Harmanli to Cosenza | 537.45 mi (864.95 km) |
| Harmanli to Cossato | 917.82 mi (1,477.10 km) |
| Harmanli to Costa Volpino | 830.00 mi (1,335.76 km) |
| Harmanli to Creazzo | 760.23 mi (1,223.48 km) |
| Harmanli to Crema | 843.05 mi (1,356.76 km) |
| Harmanli to Cremona | 823.42 mi (1,325.17 km) |
| Harmanli to Crevalcore | 764.73 mi (1,230.71 km) |
| Harmanli to Crispiano | 459.21 mi (739.03 km) |
| Harmanli to Crosia | 504.94 mi (812.63 km) |
| Harmanli to Crotone | 501.36 mi (806.85 km) |
| Harmanli to Cuneo | 938.15 mi (1,509.80 km) |
| Harmanli to Cuorgne | 940.68 mi (1,513.87 km) |
| Harmanli to Cusano Milanino | 869.21 mi (1,398.86 km) |
| Harmanli to Cutro | 509.36 mi (819.73 km) |
| Harmanli to Cutrofiano | 420.36 mi (676.50 km) |
