| Duffel to Isparta | 1,567.33 mi (2,522.38 km) |
| Duffel to Istanbul | 1,353.81 mi (2,178.75 km) |
| Duffel to Izmir | 1,404.13 mi (2,259.73 km) |
| Duffel to Kadinhani | 1,610.23 mi (2,591.42 km) |
| Duffel to Kadirli | 1,808.06 mi (2,909.79 km) |
| Duffel to Kagithane | 1,351.73 mi (2,175.40 km) |
| Duffel to Kahramanmaras | 1,832.56 mi (2,949.21 km) |
| Duffel to Kahta | 1,893.82 mi (3,047.81 km) |
| Duffel to Kaman | 1,620.91 mi (2,608.60 km) |
| Duffel to Kangal | 1,778.55 mi (2,862.30 km) |
| Duffel to Kapakli | 1,300.02 mi (2,092.18 km) |
| Duffel to Karaagac | 1,846.80 mi (2,972.14 km) |
| Duffel to Karaagac | 1,300.81 mi (2,093.45 km) |
| Duffel to Karabuk | 1,496.75 mi (2,408.79 km) |
| Duffel to Karahalli | 1,500.19 mi (2,414.32 km) |
