| Harmanli to Coin | 1,669.20 mi (2,686.32 km) |
| Harmanli to Colindres | 1,486.79 mi (2,392.76 km) |
| Harmanli to Collado-Villalba | 1,547.57 mi (2,490.58 km) |
| Harmanli to Colmenar Viejo | 1,534.79 mi (2,470.01 km) |
| Harmanli to Colmenarejo | 1,549.17 mi (2,493.14 km) |
| Harmanli to Conil de la Frontera | 1,748.23 mi (2,813.50 km) |
| Harmanli to Consuegra | 1,547.36 mi (2,490.23 km) |
| Harmanli to Corbera de Llobregat | 1,233.44 mi (1,985.03 km) |
| Harmanli to Cordoba | 1,640.84 mi (2,640.67 km) |
| Harmanli to Coria del Rio | 1,720.45 mi (2,768.79 km) |
| Harmanli to Crevillente | 1,428.52 mi (2,298.98 km) |
| Harmanli to Cuarte de Huerva | 1,376.70 mi (2,215.59 km) |
| Harmanli to Cubellas | 1,249.10 mi (2,010.24 km) |
| Harmanli to Cuellar | 1,551.77 mi (2,497.33 km) |
| Harmanli to Cuenca | 1,461.80 mi (2,352.54 km) |
