| Isernhagen-Sud to Popovo | 980.70 mi (1,578.28 km) |
| Isernhagen-Sud to Provadia | 1,031.57 mi (1,660.16 km) |
| Isernhagen-Sud to Radnevo | 1,023.49 mi (1,647.15 km) |
| Isernhagen-Sud to Radomir | 913.73 mi (1,470.50 km) |
| Isernhagen-Sud to Rakitovo | 980.03 mi (1,577.21 km) |
| Isernhagen-Sud to Rakovski | 991.91 mi (1,596.33 km) |
| Isernhagen-Sud to Razgrad | 981.78 mi (1,580.02 km) |
| Isernhagen-Sud to Razlog | 966.45 mi (1,555.35 km) |
| Isernhagen-Sud to Ruse | 947.69 mi (1,525.16 km) |
| Isernhagen-Sud to Samokov | 944.16 mi (1,519.48 km) |
| Isernhagen-Sud to Sandanski | 978.53 mi (1,574.79 km) |
| Isernhagen-Sud to Sevlievo | 958.35 mi (1,542.31 km) |
| Isernhagen-Sud to Shumen | 1,008.79 mi (1,623.50 km) |
| Isernhagen-Sud to Silistra | 981.11 mi (1,578.94 km) |
| Isernhagen-Sud to Sliven | 1,017.50 mi (1,637.51 km) |
