| Duffel to Karakocan | 1,902.40 mi (3,061.62 km) |
| Duffel to Karakopru | 1,927.60 mi (3,102.17 km) |
| Duffel to Karaman | 1,700.33 mi (2,736.41 km) |
| Duffel to Karapinar | 1,688.52 mi (2,717.41 km) |
| Duffel to Karatas | 1,816.51 mi (2,923.40 km) |
| Duffel to Karatepe | 1,407.02 mi (2,264.37 km) |
| Duffel to Karayilan | 1,843.83 mi (2,967.35 km) |
| Duffel to Kargipinar | 1,772.80 mi (2,853.05 km) |
| Duffel to Karkamis | 1,910.78 mi (3,075.11 km) |
| Duffel to Karliova | 1,929.43 mi (3,105.11 km) |
| Duffel to Kars | 1,965.73 mi (3,163.53 km) |
| Duffel to Kartal | 1,368.83 mi (2,202.92 km) |
| Duffel to Kas | 1,609.78 mi (2,590.69 km) |
| Duffel to Kastamonu | 1,537.61 mi (2,474.54 km) |
| Duffel to Kavak | 1,645.34 mi (2,647.92 km) |
