| Sint-Pieters-Leeuw to Provadia | 1,205.56 mi (1,940.16 km) |
| Sint-Pieters-Leeuw to Radnevo | 1,179.12 mi (1,897.61 km) |
| Sint-Pieters-Leeuw to Radomir | 1,048.88 mi (1,688.01 km) |
| Sint-Pieters-Leeuw to Rakitovo | 1,118.50 mi (1,800.05 km) |
| Sint-Pieters-Leeuw to Rakovski | 1,140.45 mi (1,835.38 km) |
| Sint-Pieters-Leeuw to Razgrad | 1,153.83 mi (1,856.91 km) |
| Sint-Pieters-Leeuw to Razlog | 1,098.72 mi (1,768.22 km) |
| Sint-Pieters-Leeuw to Ruse | 1,119.33 mi (1,801.39 km) |
| Sint-Pieters-Leeuw to Samokov | 1,082.09 mi (1,741.45 km) |
| Sint-Pieters-Leeuw to Sandanski | 1,105.87 mi (1,779.73 km) |
| Sint-Pieters-Leeuw to Sevlievo | 1,115.78 mi (1,795.68 km) |
| Sint-Pieters-Leeuw to Shumen | 1,180.81 mi (1,900.34 km) |
| Sint-Pieters-Leeuw to Silistra | 1,163.45 mi (1,872.39 km) |
| Sint-Pieters-Leeuw to Sliven | 1,179.69 mi (1,898.53 km) |
| Sint-Pieters-Leeuw to Smolyan | 1,160.60 mi (1,867.81 km) |
