| Billerbeck to Popovo | 1,058.97 mi (1,704.25 km) |
| Billerbeck to Provadia | 1,112.37 mi (1,790.18 km) |
| Billerbeck to Radnevo | 1,096.69 mi (1,764.96 km) |
| Billerbeck to Radomir | 977.72 mi (1,573.49 km) |
| Billerbeck to Rakitovo | 1,045.84 mi (1,683.12 km) |
| Billerbeck to Rakovski | 1,062.00 mi (1,709.13 km) |
| Billerbeck to Razgrad | 1,061.57 mi (1,708.43 km) |
| Billerbeck to Razlog | 1,029.58 mi (1,656.94 km) |
| Billerbeck to Ruse | 1,027.15 mi (1,653.04 km) |
| Billerbeck to Samokov | 1,009.53 mi (1,624.67 km) |
| Billerbeck to Sandanski | 1,039.65 mi (1,673.16 km) |
| Billerbeck to Sevlievo | 1,031.96 mi (1,660.79 km) |
| Billerbeck to Shumen | 1,088.69 mi (1,752.08 km) |
| Billerbeck to Silistra | 1,065.11 mi (1,714.13 km) |
| Billerbeck to Sliven | 1,093.39 mi (1,759.64 km) |
