| Niederkassel to Ciampino | 676.80 mi (1,089.20 km) |
| Niederkassel to Cicciano | 769.30 mi (1,238.07 km) |
| Niederkassel to Cingoli | 590.75 mi (950.73 km) |
| Niederkassel to Cinisello Balsamo | 377.49 mi (607.52 km) |
| Niederkassel to Cinisi | 922.97 mi (1,485.38 km) |
| Niederkassel to Cirie | 386.52 mi (622.05 km) |
| Niederkassel to Ciro Marina | 929.76 mi (1,496.30 km) |
| Niederkassel to Cislago | 367.87 mi (592.03 km) |
| Niederkassel to Cisterna di Latina | 694.54 mi (1,117.76 km) |
| Niederkassel to Cisternino | 856.45 mi (1,378.33 km) |
| Niederkassel to Citta di Castello | 563.82 mi (907.38 km) |
| Niederkassel to Citta Sant'Angelo | 662.30 mi (1,065.87 km) |
| Niederkassel to Cittadella | 418.40 mi (673.35 km) |
| Niederkassel to Cittanova | 968.00 mi (1,557.84 km) |
| Niederkassel to Cividale del Friuli | 438.08 mi (705.03 km) |
