| Niederkassel to Karakocan | 1,791.31 mi (2,882.84 km) |
| Niederkassel to Karakopru | 1,817.31 mi (2,924.67 km) |
| Niederkassel to Karaman | 1,592.64 mi (2,563.10 km) |
| Niederkassel to Karapinar | 1,580.17 mi (2,543.04 km) |
| Niederkassel to Karatas | 1,708.00 mi (2,748.75 km) |
| Niederkassel to Karatepe | 1,298.18 mi (2,089.21 km) |
| Niederkassel to Karayilan | 1,734.76 mi (2,791.83 km) |
| Niederkassel to Kargipinar | 1,664.77 mi (2,679.19 km) |
| Niederkassel to Karkamis | 1,800.91 mi (2,898.28 km) |
| Niederkassel to Karliova | 1,818.21 mi (2,926.13 km) |
| Niederkassel to Kars | 1,854.61 mi (2,984.70 km) |
| Niederkassel to Kartal | 1,260.32 mi (2,028.28 km) |
| Niederkassel to Kas | 1,506.30 mi (2,424.16 km) |
| Niederkassel to Kastamonu | 1,426.86 mi (2,296.31 km) |
| Niederkassel to Kavak | 1,534.29 mi (2,469.21 km) |
