| Cloppenburg to Popovo | 1,060.14 mi (1,706.14 km) |
| Cloppenburg to Provadia | 1,111.50 mi (1,788.79 km) |
| Cloppenburg to Radnevo | 1,101.86 mi (1,773.27 km) |
| Cloppenburg to Radomir | 989.47 mi (1,592.40 km) |
| Cloppenburg to Rakitovo | 1,056.39 mi (1,700.09 km) |
| Cloppenburg to Rakovski | 1,069.47 mi (1,721.15 km) |
| Cloppenburg to Razgrad | 1,061.51 mi (1,708.34 km) |
| Cloppenburg to Razlog | 1,041.98 mi (1,676.90 km) |
| Cloppenburg to Ruse | 1,027.35 mi (1,653.36 km) |
| Cloppenburg to Samokov | 1,020.35 mi (1,642.10 km) |
| Cloppenburg to Sandanski | 1,053.43 mi (1,695.33 km) |
| Cloppenburg to Sevlievo | 1,036.77 mi (1,668.52 km) |
| Cloppenburg to Shumen | 1,088.56 mi (1,751.86 km) |
| Cloppenburg to Silistra | 1,061.51 mi (1,708.33 km) |
| Cloppenburg to Sliven | 1,096.48 mi (1,764.61 km) |
