| Borgentreich to Popovo | 971.77 mi (1,563.91 km) |
| Borgentreich to Provadia | 1,024.79 mi (1,649.24 km) |
| Borgentreich to Radnevo | 1,010.53 mi (1,626.29 km) |
| Borgentreich to Radomir | 893.91 mi (1,438.60 km) |
| Borgentreich to Rakitovo | 961.56 mi (1,547.48 km) |
| Borgentreich to Rakovski | 976.56 mi (1,571.63 km) |
| Borgentreich to Razgrad | 974.12 mi (1,567.70 km) |
| Borgentreich to Razlog | 946.08 mi (1,522.57 km) |
| Borgentreich to Ruse | 939.74 mi (1,512.37 km) |
| Borgentreich to Samokov | 925.34 mi (1,489.18 km) |
| Borgentreich to Sandanski | 956.80 mi (1,539.83 km) |
| Borgentreich to Sevlievo | 945.67 mi (1,521.90 km) |
| Borgentreich to Shumen | 1,001.24 mi (1,611.34 km) |
| Borgentreich to Silistra | 977.13 mi (1,572.54 km) |
| Borgentreich to Sliven | 1,006.65 mi (1,620.05 km) |
