| Poperinge to Provadia | 1,270.90 mi (2,045.32 km) |
| Poperinge to Radnevo | 1,243.22 mi (2,000.77 km) |
| Poperinge to Radomir | 1,111.52 mi (1,788.82 km) |
| Poperinge to Rakitovo | 1,181.26 mi (1,901.06 km) |
| Poperinge to Rakovski | 1,204.05 mi (1,937.73 km) |
| Poperinge to Razgrad | 1,219.12 mi (1,961.98 km) |
| Poperinge to Razlog | 1,160.96 mi (1,868.38 km) |
| Poperinge to Ruse | 1,184.64 mi (1,906.49 km) |
| Poperinge to Samokov | 1,144.89 mi (1,842.53 km) |
| Poperinge to Sandanski | 1,167.60 mi (1,879.07 km) |
| Poperinge to Sevlievo | 1,180.13 mi (1,899.24 km) |
| Poperinge to Shumen | 1,246.07 mi (2,005.35 km) |
| Poperinge to Silistra | 1,229.30 mi (1,978.37 km) |
| Poperinge to Sliven | 1,244.29 mi (2,002.49 km) |
| Poperinge to Smolyan | 1,223.34 mi (1,968.78 km) |
