| Opglabbeek to Provadia | 1,156.10 mi (1,860.57 km) |
| Opglabbeek to Radnevo | 1,132.75 mi (1,822.98 km) |
| Opglabbeek to Radomir | 1,005.69 mi (1,618.50 km) |
| Opglabbeek to Rakitovo | 1,074.98 mi (1,730.02 km) |
| Opglabbeek to Rakovski | 1,095.21 mi (1,762.57 km) |
| Opglabbeek to Razgrad | 1,104.57 mi (1,777.64 km) |
| Opglabbeek to Razlog | 1,056.26 mi (1,699.88 km) |
| Opglabbeek to Ruse | 1,070.05 mi (1,722.08 km) |
| Opglabbeek to Samokov | 1,038.53 mi (1,671.36 km) |
| Opglabbeek to Sandanski | 1,064.33 mi (1,712.88 km) |
| Opglabbeek to Sevlievo | 1,068.90 mi (1,720.23 km) |
| Opglabbeek to Shumen | 1,131.63 mi (1,821.18 km) |
| Opglabbeek to Silistra | 1,112.52 mi (1,790.42 km) |
| Opglabbeek to Sliven | 1,132.18 mi (1,822.07 km) |
| Opglabbeek to Smolyan | 1,117.09 mi (1,797.77 km) |
