| Harmanli to Cabries | 1,044.71 mi (1,681.30 km) |
| Harmanli to Cachan | 1,232.01 mi (1,982.74 km) |
| Harmanli to Caen | 1,357.41 mi (2,184.55 km) |
| Harmanli to Cagnes-sur-Mer | 956.03 mi (1,538.59 km) |
| Harmanli to Cahors | 1,239.59 mi (1,994.92 km) |
| Harmanli to Calais | 1,294.86 mi (2,083.87 km) |
| Harmanli to Caluire-et-Cuire | 1,078.67 mi (1,735.95 km) |
| Harmanli to Cambrai | 1,220.14 mi (1,963.62 km) |
| Harmanli to Canet-en-Roussillon | 1,167.18 mi (1,878.39 km) |
| Harmanli to Cannes | 962.78 mi (1,549.45 km) |
| Harmanli to Canteleu | 1,299.84 mi (2,091.89 km) |
| Harmanli to Capbreton | 1,384.63 mi (2,228.35 km) |
| Harmanli to Carcassonne | 1,197.56 mi (1,927.28 km) |
| Harmanli to Carmaux | 1,204.52 mi (1,938.49 km) |
| Harmanli to Carpentras | 1,060.98 mi (1,707.48 km) |
