| Horndean to Popovo | 1,372.59 mi (2,208.97 km) |
| Horndean to Provadia | 1,429.94 mi (2,301.26 km) |
| Horndean to Radnevo | 1,399.56 mi (2,252.38 km) |
| Horndean to Radomir | 1,264.90 mi (2,035.66 km) |
| Horndean to Rakitovo | 1,334.80 mi (2,148.15 km) |
| Horndean to Rakovski | 1,359.34 mi (2,187.65 km) |
| Horndean to Razgrad | 1,378.05 mi (2,217.75 km) |
| Horndean to Razlog | 1,313.40 mi (2,113.71 km) |
| Horndean to Ruse | 1,343.62 mi (2,162.35 km) |
| Horndean to Samokov | 1,298.57 mi (2,089.84 km) |
| Horndean to Sandanski | 1,318.97 mi (2,122.67 km) |
| Horndean to Sevlievo | 1,337.06 mi (2,151.78 km) |
| Horndean to Shumen | 1,404.91 mi (2,260.98 km) |
| Horndean to Silistra | 1,389.47 mi (2,236.13 km) |
| Horndean to Sliven | 1,401.70 mi (2,255.81 km) |
