| Rehlingen-Siersburg to Popovo | 1,017.10 mi (1,636.87 km) |
| Rehlingen-Siersburg to Provadia | 1,074.87 mi (1,729.83 km) |
| Rehlingen-Siersburg to Radnevo | 1,043.54 mi (1,679.41 km) |
| Rehlingen-Siersburg to Radomir | 909.72 mi (1,464.06 km) |
| Rehlingen-Siersburg to Rakitovo | 979.56 mi (1,576.45 km) |
| Rehlingen-Siersburg to Rakovski | 1,003.46 mi (1,614.91 km) |
| Rehlingen-Siersburg to Razgrad | 1,022.91 mi (1,646.22 km) |
| Rehlingen-Siersburg to Razlog | 958.77 mi (1,542.99 km) |
| Rehlingen-Siersburg to Ruse | 988.56 mi (1,590.93 km) |
| Rehlingen-Siersburg to Samokov | 943.26 mi (1,518.02 km) |
| Rehlingen-Siersburg to Sandanski | 965.07 mi (1,553.12 km) |
| Rehlingen-Siersburg to Sevlievo | 981.06 mi (1,578.86 km) |
| Rehlingen-Siersburg to Shumen | 1,049.69 mi (1,689.31 km) |
| Rehlingen-Siersburg to Silistra | 1,035.84 mi (1,667.03 km) |
| Rehlingen-Siersburg to Sliven | 1,045.78 mi (1,683.01 km) |
