| Niederkassel to Bumbesti-Jiu | 847.79 mi (1,364.39 km) |
| Niederkassel to Busteni | 928.44 mi (1,494.18 km) |
| Niederkassel to Buzau | 991.32 mi (1,595.38 km) |
| Niederkassel to Cajvana | 877.84 mi (1,412.74 km) |
| Niederkassel to Calafat | 878.88 mi (1,414.43 km) |
| Niederkassel to Calan | 811.94 mi (1,306.69 km) |
| Niederkassel to Calarasi | 1,047.35 mi (1,685.55 km) |
| Niederkassel to Campia Turzii | 820.87 mi (1,321.06 km) |
| Niederkassel to Campina | 946.87 mi (1,523.84 km) |
| Niederkassel to Campulung | 913.06 mi (1,469.43 km) |
| Niederkassel to Campulung Moldovenesc | 864.17 mi (1,390.74 km) |
| Niederkassel to Caracal | 928.71 mi (1,494.62 km) |
| Niederkassel to Caransebes | 791.50 mi (1,273.79 km) |
| Niederkassel to Carei | 727.38 mi (1,170.60 km) |
| Niederkassel to Cernavoda | 1,071.41 mi (1,724.26 km) |
