| Silistra to Castelli Calepio | 854.74 mi (1,375.57 km) |
| Silistra to Castelnovo ne' Monti | 832.91 mi (1,340.44 km) |
| Silistra to Castelnuovo Berardenga | 787.22 mi (1,266.91 km) |
| Silistra to Castelnuovo di Porto | 755.79 mi (1,216.33 km) |
| Silistra to Castelnuovo di Verona | 812.63 mi (1,307.80 km) |
| Silistra to Castelnuovo Rangone | 806.13 mi (1,297.33 km) |
| Silistra to Castelvetrano | 874.77 mi (1,407.81 km) |
| Silistra to Castelvetro di Modena | 805.53 mi (1,296.37 km) |
| Silistra to Castenaso | 779.89 mi (1,255.11 km) |
| Silistra to Castenedolo | 835.43 mi (1,344.49 km) |
| Silistra to Castiglion Fiorentino | 766.71 mi (1,233.89 km) |
| Silistra to Castiglione del Lago | 762.73 mi (1,227.49 km) |
| Silistra to Castiglione delle Stiviere | 825.55 mi (1,328.59 km) |
| Silistra to Castrolibero | 659.03 mi (1,060.61 km) |
| Silistra to Castrovillari | 640.46 mi (1,030.72 km) |
