| Obersiggenthal to Popovo | 913.41 mi (1,469.98 km) |
| Obersiggenthal to Provadia | 973.14 mi (1,566.11 km) |
| Obersiggenthal to Radnevo | 932.24 mi (1,500.30 km) |
| Obersiggenthal to Radomir | 791.33 mi (1,273.52 km) |
| Obersiggenthal to Rakitovo | 861.16 mi (1,385.91 km) |
| Obersiggenthal to Rakovski | 889.40 mi (1,431.34 km) |
| Obersiggenthal to Razgrad | 921.23 mi (1,482.58 km) |
| Obersiggenthal to Razlog | 837.99 mi (1,348.62 km) |
| Obersiggenthal to Ruse | 887.50 mi (1,428.30 km) |
| Obersiggenthal to Samokov | 825.38 mi (1,328.32 km) |
| Obersiggenthal to Sandanski | 842.03 mi (1,355.12 km) |
| Obersiggenthal to Sevlievo | 872.10 mi (1,403.51 km) |
| Obersiggenthal to Shumen | 947.36 mi (1,524.63 km) |
| Obersiggenthal to Silistra | 940.25 mi (1,513.18 km) |
| Obersiggenthal to Sliven | 937.93 mi (1,509.46 km) |
