| Korbach to Popovo | 977.07 mi (1,572.45 km) |
| Korbach to Provadia | 1,030.86 mi (1,659.01 km) |
| Korbach to Radnevo | 1,014.20 mi (1,632.19 km) |
| Korbach to Radomir | 894.93 mi (1,440.25 km) |
| Korbach to Rakitovo | 963.05 mi (1,549.88 km) |
| Korbach to Rakovski | 979.32 mi (1,576.06 km) |
| Korbach to Razgrad | 979.91 mi (1,577.02 km) |
| Korbach to Razlog | 946.81 mi (1,523.74 km) |
| Korbach to Ruse | 945.46 mi (1,521.57 km) |
| Korbach to Samokov | 926.73 mi (1,491.43 km) |
| Korbach to Sandanski | 956.95 mi (1,540.06 km) |
| Korbach to Sevlievo | 949.53 mi (1,528.11 km) |
| Korbach to Shumen | 1,007.04 mi (1,620.67 km) |
| Korbach to Silistra | 984.32 mi (1,584.10 km) |
| Korbach to Sliven | 1,011.16 mi (1,627.30 km) |
