| Korschenbroich to Popovo | 1,066.27 mi (1,715.99 km) |
| Korschenbroich to Provadia | 1,121.38 mi (1,804.68 km) |
| Korschenbroich to Radnevo | 1,100.09 mi (1,770.42 km) |
| Korschenbroich to Radomir | 975.30 mi (1,569.59 km) |
| Korschenbroich to Rakitovo | 1,044.30 mi (1,680.63 km) |
| Korschenbroich to Rakovski | 1,063.34 mi (1,711.28 km) |
| Korschenbroich to Razgrad | 1,070.01 mi (1,722.01 km) |
| Korschenbroich to Razlog | 1,026.30 mi (1,651.67 km) |
| Korschenbroich to Ruse | 1,035.49 mi (1,666.46 km) |
| Korschenbroich to Samokov | 1,007.86 mi (1,621.99 km) |
| Korschenbroich to Sandanski | 1,035.00 mi (1,665.68 km) |
| Korschenbroich to Sevlievo | 1,035.95 mi (1,667.20 km) |
| Korschenbroich to Shumen | 1,097.10 mi (1,765.61 km) |
| Korschenbroich to Silistra | 1,076.83 mi (1,733.00 km) |
| Korschenbroich to Sliven | 1,098.76 mi (1,768.29 km) |
