| Silla to Popovo | 1,402.72 mi (2,257.46 km) |
| Silla to Provadia | 1,462.77 mi (2,354.09 km) |
| Silla to Radnevo | 1,386.42 mi (2,231.24 km) |
| Silla to Radomir | 1,234.58 mi (1,986.87 km) |
| Silla to Rakitovo | 1,291.76 mi (2,078.89 km) |
| Silla to Rakovski | 1,336.96 mi (2,151.64 km) |
| Silla to Razgrad | 1,417.43 mi (2,281.14 km) |
| Silla to Razlog | 1,260.08 mi (2,027.90 km) |
| Silla to Ruse | 1,390.42 mi (2,237.67 km) |
| Silla to Samokov | 1,264.97 mi (2,035.77 km) |
| Silla to Sandanski | 1,250.74 mi (2,012.88 km) |
| Silla to Sevlievo | 1,345.49 mi (2,165.36 km) |
| Silla to Shumen | 1,437.74 mi (2,313.82 km) |
| Silla to Silistra | 1,456.53 mi (2,344.06 km) |
| Silla to Sliven | 1,406.77 mi (2,263.98 km) |
