| Alpen to Popovo | 1,077.20 mi (1,733.58 km) |
| Alpen to Provadia | 1,131.67 mi (1,821.24 km) |
| Alpen to Radnevo | 1,112.51 mi (1,790.41 km) |
| Alpen to Radomir | 989.77 mi (1,592.88 km) |
| Alpen to Rakitovo | 1,058.49 mi (1,703.48 km) |
| Alpen to Rakovski | 1,076.50 mi (1,732.46 km) |
| Alpen to Razgrad | 1,080.50 mi (1,738.89 km) |
| Alpen to Razlog | 1,041.10 mi (1,675.49 km) |
| Alpen to Ruse | 1,046.00 mi (1,683.38 km) |
| Alpen to Samokov | 1,022.08 mi (1,644.87 km) |
| Alpen to Sandanski | 1,050.28 mi (1,690.27 km) |
| Alpen to Sevlievo | 1,048.12 mi (1,686.79 km) |
| Alpen to Shumen | 1,107.61 mi (1,782.53 km) |
| Alpen to Silistra | 1,086.04 mi (1,747.81 km) |
| Alpen to Sliven | 1,110.44 mi (1,787.08 km) |
