| Middelkerke to Provadia | 1,273.10 mi (2,048.85 km) |
| Middelkerke to Radnevo | 1,247.16 mi (2,007.10 km) |
| Middelkerke to Radomir | 1,117.00 mi (1,797.64 km) |
| Middelkerke to Rakitovo | 1,186.63 mi (1,909.69 km) |
| Middelkerke to Rakovski | 1,208.56 mi (1,944.99 km) |
| Middelkerke to Razgrad | 1,221.41 mi (1,965.67 km) |
| Middelkerke to Razlog | 1,166.82 mi (1,877.81 km) |
| Middelkerke to Ruse | 1,186.90 mi (1,910.14 km) |
| Middelkerke to Samokov | 1,150.22 mi (1,851.10 km) |
| Middelkerke to Sandanski | 1,173.90 mi (1,889.22 km) |
| Middelkerke to Sevlievo | 1,183.76 mi (1,905.08 km) |
| Middelkerke to Shumen | 1,248.41 mi (2,009.13 km) |
| Middelkerke to Silistra | 1,230.56 mi (1,980.40 km) |
| Middelkerke to Sliven | 1,247.60 mi (2,007.81 km) |
| Middelkerke to Smolyan | 1,228.73 mi (1,977.45 km) |
