| Cities | Distance |
|---|
| Castellanza to Popovo | 866.88 mi (1,395.12 km) |
| Castellanza to Provadia | 928.03 mi (1,493.52 km) |
| Castellanza to Radnevo | 875.73 mi (1,409.36 km) |
| Castellanza to Radomir | 727.69 mi (1,171.11 km) |
| Castellanza to Rakitovo | 796.24 mi (1,281.43 km) |
| Castellanza to Rakovski | 829.92 mi (1,335.63 km) |
| Castellanza to Razgrad | 877.06 mi (1,411.50 km) |
| Castellanza to Razlog | 770.10 mi (1,239.35 km) |
| Castellanza to Ruse | 844.72 mi (1,359.45 km) |
| Castellanza to Samokov | 761.82 mi (1,226.03 km) |
| Castellanza to Sandanski | 770.81 mi (1,240.49 km) |
| Castellanza to Sevlievo | 819.67 mi (1,319.13 km) |
| Castellanza to Shumen | 901.94 mi (1,451.53 km) |
| Castellanza to Silistra | 903.05 mi (1,453.32 km) |
| Castellanza to Sliven | 885.78 mi (1,425.53 km) |
