| Ludinghausen to Popovo | 1,047.13 mi (1,685.19 km) |
| Ludinghausen to Provadia | 1,100.83 mi (1,771.62 km) |
| Ludinghausen to Radnevo | 1,084.24 mi (1,744.92 km) |
| Ludinghausen to Radomir | 964.40 mi (1,552.06 km) |
| Ludinghausen to Rakitovo | 1,032.66 mi (1,661.91 km) |
| Ludinghausen to Rakovski | 1,049.24 mi (1,688.58 km) |
| Ludinghausen to Razgrad | 1,049.92 mi (1,689.69 km) |
| Ludinghausen to Razlog | 1,016.16 mi (1,635.35 km) |
| Ludinghausen to Ruse | 1,015.48 mi (1,634.25 km) |
| Ludinghausen to Samokov | 996.32 mi (1,603.42 km) |
| Ludinghausen to Sandanski | 1,026.06 mi (1,651.29 km) |
| Ludinghausen to Sevlievo | 1,019.59 mi (1,640.87 km) |
| Ludinghausen to Shumen | 1,077.04 mi (1,733.33 km) |
| Ludinghausen to Silistra | 1,054.04 mi (1,696.32 km) |
| Ludinghausen to Sliven | 1,081.25 mi (1,740.10 km) |
