| Sileby to Popovo | 1,407.70 mi (2,265.47 km) |
| Sileby to Provadia | 1,462.91 mi (2,354.32 km) |
| Sileby to Radnevo | 1,440.58 mi (2,318.39 km) |
| Sileby to Radomir | 1,312.89 mi (2,112.90 km) |
| Sileby to Rakitovo | 1,382.32 mi (2,224.64 km) |
| Sileby to Rakovski | 1,402.99 mi (2,257.90 km) |
| Sileby to Razgrad | 1,411.52 mi (2,271.63 km) |
| Sileby to Razlog | 1,363.14 mi (2,193.76 km) |
| Sileby to Ruse | 1,377.01 mi (2,216.08 km) |
| Sileby to Samokov | 1,345.88 mi (2,165.99 km) |
| Sileby to Sandanski | 1,370.70 mi (2,205.93 km) |
| Sileby to Sevlievo | 1,376.69 mi (2,215.57 km) |
| Sileby to Shumen | 1,438.61 mi (2,315.22 km) |
| Sileby to Silistra | 1,418.14 mi (2,282.28 km) |
| Sileby to Sliven | 1,439.84 mi (2,317.21 km) |
