| Dortmund to Popovo | 1,038.29 mi (1,670.97 km) |
| Dortmund to Provadia | 1,092.41 mi (1,758.07 km) |
| Dortmund to Radnevo | 1,074.50 mi (1,729.24 km) |
| Dortmund to Radomir | 953.36 mi (1,534.29 km) |
| Dortmund to Rakitovo | 1,021.82 mi (1,644.47 km) |
| Dortmund to Rakovski | 1,039.03 mi (1,672.15 km) |
| Dortmund to Razgrad | 1,041.35 mi (1,675.90 km) |
| Dortmund to Razlog | 1,004.95 mi (1,617.31 km) |
| Dortmund to Ruse | 1,006.88 mi (1,620.42 km) |
| Dortmund to Samokov | 985.45 mi (1,585.92 km) |
| Dortmund to Sandanski | 1,014.57 mi (1,632.79 km) |
| Dortmund to Sevlievo | 1,009.97 mi (1,625.39 km) |
| Dortmund to Shumen | 1,068.47 mi (1,719.54 km) |
| Dortmund to Silistra | 1,046.28 mi (1,683.82 km) |
| Dortmund to Sliven | 1,071.96 mi (1,725.15 km) |
