| Bergisch Gladbach to Popovo | 1,036.58 mi (1,668.22 km) |
| Bergisch Gladbach to Provadia | 1,091.75 mi (1,757.00 km) |
| Bergisch Gladbach to Radnevo | 1,070.35 mi (1,722.57 km) |
| Bergisch Gladbach to Radomir | 945.68 mi (1,521.93 km) |
| Bergisch Gladbach to Rakitovo | 1,014.65 mi (1,632.93 km) |
| Bergisch Gladbach to Rakovski | 1,033.62 mi (1,663.45 km) |
| Bergisch Gladbach to Razgrad | 1,040.36 mi (1,674.30 km) |
| Bergisch Gladbach to Razlog | 996.73 mi (1,604.08 km) |
| Bergisch Gladbach to Ruse | 1,005.84 mi (1,618.74 km) |
| Bergisch Gladbach to Samokov | 978.21 mi (1,574.28 km) |
| Bergisch Gladbach to Sandanski | 1,005.51 mi (1,618.21 km) |
| Bergisch Gladbach to Sevlievo | 1,006.22 mi (1,619.35 km) |
| Bergisch Gladbach to Shumen | 1,067.45 mi (1,717.89 km) |
| Bergisch Gladbach to Silistra | 1,047.35 mi (1,685.55 km) |
| Bergisch Gladbach to Sliven | 1,069.04 mi (1,720.45 km) |
