| Rheinberg to Popovo | 1,072.94 mi (1,726.74 km) |
| Rheinberg to Provadia | 1,127.42 mi (1,814.41 km) |
| Rheinberg to Radnevo | 1,108.25 mi (1,783.56 km) |
| Rheinberg to Radomir | 985.53 mi (1,586.05 km) |
| Rheinberg to Rakitovo | 1,054.25 mi (1,696.64 km) |
| Rheinberg to Rakovski | 1,072.25 mi (1,725.61 km) |
| Rheinberg to Razgrad | 1,076.25 mi (1,732.06 km) |
| Rheinberg to Razlog | 1,036.86 mi (1,668.67 km) |
| Rheinberg to Ruse | 1,041.75 mi (1,676.54 km) |
| Rheinberg to Samokov | 1,017.83 mi (1,638.04 km) |
| Rheinberg to Sandanski | 1,046.06 mi (1,683.47 km) |
| Rheinberg to Sevlievo | 1,043.86 mi (1,679.93 km) |
| Rheinberg to Shumen | 1,103.36 mi (1,775.69 km) |
| Rheinberg to Silistra | 1,081.81 mi (1,741.01 km) |
| Rheinberg to Sliven | 1,106.18 mi (1,780.23 km) |
