| Horstel to Popovo | 1,058.18 mi (1,702.98 km) |
| Horstel to Provadia | 1,110.85 mi (1,787.75 km) |
| Horstel to Radnevo | 1,097.41 mi (1,766.11 km) |
| Horstel to Radomir | 980.83 mi (1,578.50 km) |
| Horstel to Rakitovo | 1,048.54 mi (1,687.47 km) |
| Horstel to Rakovski | 1,063.56 mi (1,711.64 km) |
| Horstel to Razgrad | 1,060.33 mi (1,706.43 km) |
| Horstel to Razlog | 1,032.96 mi (1,662.39 km) |
| Horstel to Ruse | 1,025.99 mi (1,651.17 km) |
| Horstel to Samokov | 1,012.31 mi (1,629.16 km) |
| Horstel to Sandanski | 1,043.56 mi (1,679.45 km) |
| Horstel to Sevlievo | 1,032.51 mi (1,661.67 km) |
| Horstel to Shumen | 1,087.44 mi (1,750.06 km) |
| Horstel to Silistra | 1,062.56 mi (1,710.03 km) |
| Horstel to Sliven | 1,093.33 mi (1,759.54 km) |
