| Oudenburg to Provadia | 1,265.55 mi (2,036.70 km) |
| Oudenburg to Radnevo | 1,239.79 mi (1,995.25 km) |
| Oudenburg to Radomir | 1,109.84 mi (1,786.12 km) |
| Oudenburg to Rakitovo | 1,179.45 mi (1,898.14 km) |
| Oudenburg to Rakovski | 1,201.27 mi (1,933.25 km) |
| Oudenburg to Razgrad | 1,213.88 mi (1,953.54 km) |
| Oudenburg to Razlog | 1,159.71 mi (1,866.37 km) |
| Oudenburg to Ruse | 1,179.37 mi (1,898.01 km) |
| Oudenburg to Samokov | 1,143.03 mi (1,839.54 km) |
| Oudenburg to Sandanski | 1,166.86 mi (1,877.88 km) |
| Oudenburg to Sevlievo | 1,176.36 mi (1,893.17 km) |
| Oudenburg to Shumen | 1,240.88 mi (1,997.01 km) |
| Oudenburg to Silistra | 1,222.94 mi (1,968.13 km) |
| Oudenburg to Sliven | 1,240.16 mi (1,995.85 km) |
| Oudenburg to Smolyan | 1,221.55 mi (1,965.90 km) |
