| Niederkassel to Cankova | 497.01 mi (799.85 km) |
| Niederkassel to Celje | 491.57 mi (791.11 km) |
| Niederkassel to Cerklje na Gorenjskem | 464.19 mi (747.05 km) |
| Niederkassel to Cerknica | 482.91 mi (777.17 km) |
| Niederkassel to Cerkno | 454.08 mi (730.76 km) |
| Niederkassel to Cerkvenjak | 500.83 mi (806.01 km) |
| Niederkassel to Cirkulane | 512.53 mi (824.83 km) |
| Niederkassel to Crensovci | 513.46 mi (826.34 km) |
| Niederkassel to Crna na Koroskem | 465.96 mi (749.88 km) |
| Niederkassel to Crnomelj | 521.40 mi (839.12 km) |
| Niederkassel to Destrnik | 501.76 mi (807.50 km) |
| Niederkassel to Divaca | 476.79 mi (767.32 km) |
| Niederkassel to Dobje | 500.68 mi (805.76 km) |
| Niederkassel to Dobrna | 485.43 mi (781.23 km) |
| Niederkassel to Dobrova | 471.59 mi (758.96 km) |
