| Donaueschingen to Popovo | 910.93 mi (1,466.00 km) |
| Donaueschingen to Provadia | 970.10 mi (1,561.23 km) |
| Donaueschingen to Radnevo | 932.39 mi (1,500.54 km) |
| Donaueschingen to Radomir | 793.95 mi (1,277.74 km) |
| Donaueschingen to Rakitovo | 863.88 mi (1,390.28 km) |
| Donaueschingen to Rakovski | 890.50 mi (1,433.12 km) |
| Donaueschingen to Razgrad | 918.11 mi (1,477.56 km) |
| Donaueschingen to Razlog | 841.63 mi (1,354.46 km) |
| Donaueschingen to Ruse | 884.13 mi (1,422.87 km) |
| Donaueschingen to Samokov | 827.85 mi (1,332.29 km) |
| Donaueschingen to Sandanski | 846.60 mi (1,362.47 km) |
| Donaueschingen to Sevlievo | 871.35 mi (1,402.30 km) |
| Donaueschingen to Shumen | 944.48 mi (1,520.00 km) |
| Donaueschingen to Silistra | 935.25 mi (1,505.13 km) |
| Donaueschingen to Sliven | 936.89 mi (1,507.77 km) |
