| Harmanli to Cogolin | 987.24 mi (1,588.80 km) |
| Harmanli to Colmar | 997.18 mi (1,604.80 km) |
| Harmanli to Colombes | 1,237.72 mi (1,991.91 km) |
| Harmanli to Colomiers | 1,246.61 mi (2,006.22 km) |
| Harmanli to Combs-la-Ville | 1,219.92 mi (1,963.27 km) |
| Harmanli to Comines | 1,243.24 mi (2,000.80 km) |
| Harmanli to Compiegne | 1,221.69 mi (1,966.12 km) |
| Harmanli to Concarneau | 1,505.42 mi (2,422.73 km) |
| Harmanli to Conde-sur-l'Escaut | 1,211.76 mi (1,950.14 km) |
| Harmanli to Conflans-Sainte-Honorine | 1,245.76 mi (2,004.85 km) |
| Harmanli to Corbas | 1,075.04 mi (1,730.12 km) |
| Harmanli to Corbeil-Essonnes | 1,222.48 mi (1,967.39 km) |
| Harmanli to Cormeilles-en-Parisis | 1,240.80 mi (1,996.87 km) |
| Harmanli to Cosne sur Loire | 1,185.45 mi (1,907.80 km) |
| Harmanli to Coudekerque-Branche | 1,274.77 mi (2,051.54 km) |
