| Sliven to Castelfiorentino | 776.18 mi (1,249.13 km) |
| Sliven to Castelfranco di Sopra | 746.57 mi (1,201.49 km) |
| Sliven to Castelfranco di Sotto | 786.96 mi (1,266.48 km) |
| Sliven to Castelfranco Emilia | 774.21 mi (1,245.98 km) |
| Sliven to Castelfranco Veneto | 741.59 mi (1,193.47 km) |
| Sliven to Castellabate | 611.52 mi (984.14 km) |
| Sliven to Castellammare del Golfo | 776.79 mi (1,250.12 km) |
| Sliven to Castellammare di Stabia | 626.24 mi (1,007.84 km) |
| Sliven to Castellamonte | 941.34 mi (1,514.95 km) |
| Sliven to Castellana Grotte | 488.09 mi (785.51 km) |
| Sliven to Castellaneta | 505.17 mi (813.00 km) |
| Sliven to Castellanza | 885.78 mi (1,425.53 km) |
| Sliven to Castellarano | 787.29 mi (1,267.01 km) |
| Sliven to Castelleone | 841.74 mi (1,354.65 km) |
| Sliven to Castelletto sopra Ticino | 899.41 mi (1,447.46 km) |
