| Kilkis to Cologno al Serio | 733.37 mi (1,180.24 km) |
| Kilkis to Cologno Monzese | 751.17 mi (1,208.88 km) |
| Kilkis to Colorno | 686.76 mi (1,105.23 km) |
| Kilkis to Comacchio | 598.44 mi (963.09 km) |
| Kilkis to Comiso | 523.93 mi (843.18 km) |
| Kilkis to Como | 766.64 mi (1,233.79 km) |
| Kilkis to Concordia Sagittaria | 601.21 mi (967.56 km) |
| Kilkis to Concorezzo | 750.00 mi (1,207.01 km) |
| Kilkis to Conegliano | 628.47 mi (1,011.43 km) |
| Kilkis to Conselice | 610.06 mi (981.80 km) |
| Kilkis to Conselve | 627.02 mi (1,009.09 km) |
| Kilkis to Conversano | 299.90 mi (482.64 km) |
| Kilkis to Copertino | 257.36 mi (414.19 km) |
| Kilkis to Copparo | 619.51 mi (997.00 km) |
| Kilkis to Corato | 336.99 mi (542.33 km) |
