| Duffel to Kocaeli | 1,403.75 mi (2,259.11 km) |
| Duffel to Konak | 1,403.75 mi (2,259.12 km) |
| Duffel to Konakli | 1,676.68 mi (2,698.36 km) |
| Duffel to Konya | 1,638.58 mi (2,637.04 km) |
| Duffel to Koprukoy | 1,938.29 mi (3,119.37 km) |
| Duffel to Korfez | 1,395.36 mi (2,245.62 km) |
| Duffel to Korkut | 1,985.73 mi (3,195.73 km) |
| Duffel to Kose | 1,833.79 mi (2,951.19 km) |
| Duffel to Kovancilar | 1,905.09 mi (3,065.95 km) |
| Duffel to Koyulhisar | 1,752.43 mi (2,820.26 km) |
| Duffel to Kozan | 1,792.08 mi (2,884.08 km) |
| Duffel to Kozlu | 1,450.60 mi (2,334.51 km) |
| Duffel to Kozluk | 1,996.56 mi (3,213.16 km) |
| Duffel to Kucuk Dalyan | 1,864.71 mi (3,000.96 km) |
| Duffel to Kucukcekmece | 1,348.15 mi (2,169.64 km) |
