| Cities | Distance |
|---|---|
| Castrolibero to Popovo | 589.87 mi (949.30 km) |
| Castrolibero to Provadia | 641.08 mi (1,031.72 km) |
| Castrolibero to Radnevo | 548.76 mi (883.14 km) |
| Castrolibero to Radomir | 416.99 mi (671.08 km) |
| Castrolibero to Rakitovo | 452.23 mi (727.79 km) |
| Castrolibero to Rakovski | 502.00 mi (807.89 km) |
| Castrolibero to Razgrad | 608.10 mi (978.64 km) |
| Castrolibero to Razlog | 420.25 mi (676.33 km) |
| Castrolibero to Ruse | 591.99 mi (952.71 km) |
| Castrolibero to Samokov | 437.31 mi (703.78 km) |
| Castrolibero to Sandanski | 403.44 mi (649.27 km) |
| Castrolibero to Sevlievo | 529.28 mi (851.80 km) |
| Castrolibero to Shumen | 620.25 mi (998.19 km) |
| Castrolibero to Silistra | 659.03 mi (1,060.61 km) |
| Castrolibero to Sliven | 576.84 mi (928.33 km) |