| Sliven to Ciampino | 704.33 mi (1,133.51 km) |
| Sliven to Cicciano | 618.47 mi (995.34 km) |
| Sliven to Cingoli | 663.53 mi (1,067.84 km) |
| Sliven to Cinisello Balsamo | 870.02 mi (1,400.16 km) |
| Sliven to Cinisi | 761.68 mi (1,225.80 km) |
| Sliven to Cirie | 945.97 mi (1,522.40 km) |
| Sliven to Ciro Marina | 531.26 mi (854.99 km) |
| Sliven to Cislago | 882.87 mi (1,420.84 km) |
| Sliven to Cisterna di Latina | 695.29 mi (1,118.96 km) |
| Sliven to Cisternino | 478.17 mi (769.53 km) |
| Sliven to Citta di Castello | 712.30 mi (1,146.33 km) |
| Sliven to Citta Sant'Angelo | 624.28 mi (1,004.68 km) |
| Sliven to Cittadella | 748.49 mi (1,204.57 km) |
| Sliven to Cittanova | 615.42 mi (990.42 km) |
| Sliven to Cividale del Friuli | 678.28 mi (1,091.59 km) |
