| Somain to Popovo | 1,181.42 mi (1,901.32 km) |
| Somain to Provadia | 1,238.69 mi (1,993.48 km) |
| Somain to Radnevo | 1,209.04 mi (1,945.76 km) |
| Somain to Radomir | 1,075.76 mi (1,731.27 km) |
| Somain to Rakitovo | 1,145.59 mi (1,843.65 km) |
| Somain to Rakovski | 1,169.26 mi (1,881.74 km) |
| Somain to Razgrad | 1,186.81 mi (1,909.99 km) |
| Somain to Razlog | 1,124.80 mi (1,810.19 km) |
| Somain to Ruse | 1,152.38 mi (1,854.58 km) |
| Somain to Samokov | 1,109.28 mi (1,785.21 km) |
| Somain to Sandanski | 1,131.02 mi (1,820.19 km) |
| Somain to Sevlievo | 1,146.30 mi (1,844.80 km) |
| Somain to Shumen | 1,213.68 mi (1,953.24 km) |
| Somain to Silistra | 1,198.25 mi (1,928.39 km) |
| Somain to Sliven | 1,210.79 mi (1,948.59 km) |
