| Harmanli to Cartagena | 1,452.39 mi (2,337.40 km) |
| Harmanli to Cartama | 1,661.91 mi (2,674.59 km) |
| Harmanli to Cartaya | 1,776.99 mi (2,859.79 km) |
| Harmanli to Caspe | 1,336.02 mi (2,150.12 km) |
| Harmanli to Cassa de la Selva | 1,180.36 mi (1,899.60 km) |
| Harmanli to Castalla | 1,413.87 mi (2,275.41 km) |
| Harmanli to Castellbisbal | 1,230.16 mi (1,979.75 km) |
| Harmanli to Castelldefels | 1,232.75 mi (1,983.92 km) |
| Harmanli to Castello de Ampurias | 1,166.94 mi (1,878.00 km) |
| Harmanli to Castellon de la Plana | 1,354.64 mi (2,180.08 km) |
| Harmanli to Castilleja de la Cuesta | 1,718.01 mi (2,764.87 km) |
| Harmanli to Catarroja | 1,384.07 mi (2,227.44 km) |
| Harmanli to Catral | 1,430.31 mi (2,301.86 km) |
| Harmanli to Caudete | 1,427.92 mi (2,298.01 km) |
| Harmanli to Cehegin | 1,482.89 mi (2,386.48 km) |
