| Niederkassel to Isparta | 1,461.11 mi (2,351.42 km) |
| Niederkassel to Istanbul | 1,245.32 mi (2,004.14 km) |
| Niederkassel to Izmir | 1,300.59 mi (2,093.09 km) |
| Niederkassel to Kadinhani | 1,502.28 mi (2,417.68 km) |
| Niederkassel to Kadirli | 1,698.65 mi (2,733.71 km) |
| Niederkassel to Kagithane | 1,243.17 mi (2,000.68 km) |
| Niederkassel to Kahramanmaras | 1,722.69 mi (2,772.40 km) |
| Niederkassel to Kahta | 1,783.33 mi (2,870.00 km) |
| Niederkassel to Kaman | 1,511.27 mi (2,432.15 km) |
| Niederkassel to Kangal | 1,667.82 mi (2,684.09 km) |
| Niederkassel to Kapakli | 1,191.85 mi (1,918.10 km) |
| Niederkassel to Karaagac | 1,737.89 mi (2,796.86 km) |
| Niederkassel to Karaagac | 1,192.68 mi (1,919.44 km) |
| Niederkassel to Karabuk | 1,386.40 mi (2,231.19 km) |
| Niederkassel to Karahalli | 1,394.26 mi (2,243.84 km) |
