| Middelburg to Popovo | 1,190.94 mi (1,916.63 km) |
| Middelburg to Provadia | 1,246.59 mi (2,006.19 km) |
| Middelburg to Radnevo | 1,223.10 mi (1,968.39 km) |
| Middelburg to Radomir | 1,095.37 mi (1,762.82 km) |
| Middelburg to Rakitovo | 1,164.76 mi (1,874.50 km) |
| Middelburg to Rakovski | 1,185.38 mi (1,907.69 km) |
| Middelburg to Razgrad | 1,195.07 mi (1,923.28 km) |
| Middelburg to Razlog | 1,145.73 mi (1,843.87 km) |
| Middelburg to Ruse | 1,160.55 mi (1,867.72 km) |
| Middelburg to Samokov | 1,128.31 mi (1,815.85 km) |
| Middelburg to Sandanski | 1,153.51 mi (1,856.39 km) |
| Middelburg to Sevlievo | 1,159.31 mi (1,865.74 km) |
| Middelburg to Shumen | 1,222.13 mi (1,966.82 km) |
| Middelburg to Silistra | 1,202.84 mi (1,935.78 km) |
| Middelburg to Sliven | 1,222.65 mi (1,967.67 km) |
