| Cities | Distance |
|---|
| Castelleone to Popovo | 823.75 mi (1,325.71 km) |
| Castelleone to Provadia | 885.02 mi (1,424.31 km) |
| Castelleone to Radnevo | 831.08 mi (1,337.50 km) |
| Castelleone to Radomir | 682.34 mi (1,098.12 km) |
| Castelleone to Rakitovo | 750.64 mi (1,208.03 km) |
| Castelleone to Rakovski | 784.94 mi (1,263.24 km) |
| Castelleone to Razgrad | 834.31 mi (1,342.69 km) |
| Castelleone to Razlog | 724.19 mi (1,165.48 km) |
| Castelleone to Ruse | 802.27 mi (1,291.13 km) |
| Castelleone to Samokov | 716.42 mi (1,152.97 km) |
| Castelleone to Sandanski | 724.57 mi (1,166.08 km) |
| Castelleone to Sevlievo | 775.69 mi (1,248.36 km) |
| Castelleone to Shumen | 858.92 mi (1,382.30 km) |
| Castelleone to Silistra | 861.48 mi (1,386.41 km) |
| Castelleone to Sliven | 841.74 mi (1,354.65 km) |
