| Duffel to Kastoria | 1,084.15 mi (1,744.77 km) |
| Duffel to Katerini | 1,140.74 mi (1,835.85 km) |
| Duffel to Keratsini | 1,299.68 mi (2,091.63 km) |
| Duffel to Kerkyra | 1,085.66 mi (1,747.20 km) |
| Duffel to Kiato | 1,267.55 mi (2,039.93 km) |
| Duffel to Kifisia | 1,300.46 mi (2,092.89 km) |
| Duffel to Kilkis | 1,118.55 mi (1,800.14 km) |
| Duffel to Komotini | 1,209.72 mi (1,946.85 km) |
| Duffel to Korinthos | 1,277.47 mi (2,055.89 km) |
| Duffel to Koropi | 1,312.15 mi (2,111.71 km) |
| Duffel to Korydallos | 1,299.95 mi (2,092.07 km) |
| Duffel to Kos | 1,487.31 mi (2,393.60 km) |
| Duffel to Kozani | 1,113.48 mi (1,791.97 km) |
| Duffel to Lagos | 1,196.12 mi (1,924.97 km) |
| Duffel to Lamia | 1,209.14 mi (1,945.93 km) |
