| Castellana Grotte to Popovo | 494.63 mi (796.03 km) |
| Castellana Grotte to Provadia | 549.90 mi (884.98 km) |
| Castellana Grotte to Radnevo | 463.24 mi (745.51 km) |
| Castellana Grotte to Radomir | 319.64 mi (514.42 km) |
| Castellana Grotte to Rakitovo | 366.15 mi (589.26 km) |
| Castellana Grotte to Rakovski | 414.40 mi (666.91 km) |
| Castellana Grotte to Razgrad | 511.98 mi (823.96 km) |
| Castellana Grotte to Razlog | 333.74 mi (537.11 km) |
| Castellana Grotte to Ruse | 492.17 mi (792.08 km) |
| Castellana Grotte to Samokov | 344.88 mi (555.04 km) |
| Castellana Grotte to Sandanski | 321.24 mi (516.98 km) |
| Castellana Grotte to Sevlievo | 434.11 mi (698.63 km) |
| Castellana Grotte to Shumen | 527.18 mi (848.42 km) |
| Castellana Grotte to Silistra | 560.14 mi (901.46 km) |
| Castellana Grotte to Sliven | 488.09 mi (785.51 km) |
