| Barth to Popovo | 974.78 mi (1,568.75 km) |
| Barth to Provadia | 1,018.67 mi (1,639.39 km) |
| Barth to Radnevo | 1,027.71 mi (1,653.95 km) |
| Barth to Radomir | 939.34 mi (1,511.73 km) |
| Barth to Rakitovo | 1,000.39 mi (1,609.96 km) |
| Barth to Rakovski | 1,003.37 mi (1,614.77 km) |
| Barth to Razgrad | 972.36 mi (1,564.87 km) |
| Barth to Razlog | 992.34 mi (1,597.01 km) |
| Barth to Ruse | 939.89 mi (1,512.61 km) |
| Barth to Samokov | 966.30 mi (1,555.10 km) |
| Barth to Sandanski | 1,007.89 mi (1,622.04 km) |
| Barth to Sevlievo | 963.24 mi (1,550.18 km) |
| Barth to Shumen | 998.50 mi (1,606.92 km) |
| Barth to Silistra | 961.67 mi (1,547.65 km) |
| Barth to Sliven | 1,016.04 mi (1,635.16 km) |
