| Aalst to Provadia | 1,217.46 mi (1,959.32 km) |
| Aalst to Radnevo | 1,191.59 mi (1,917.69 km) |
| Aalst to Radomir | 1,061.80 mi (1,708.81 km) |
| Aalst to Rakitovo | 1,131.39 mi (1,820.79 km) |
| Aalst to Rakovski | 1,153.10 mi (1,855.73 km) |
| Aalst to Razgrad | 1,165.78 mi (1,876.13 km) |
| Aalst to Razlog | 1,111.74 mi (1,789.17 km) |
| Aalst to Ruse | 1,131.27 mi (1,820.60 km) |
| Aalst to Samokov | 1,094.97 mi (1,762.18 km) |
| Aalst to Sandanski | 1,119.00 mi (1,800.85 km) |
| Aalst to Sevlievo | 1,128.17 mi (1,815.61 km) |
| Aalst to Shumen | 1,192.78 mi (1,919.59 km) |
| Aalst to Silistra | 1,175.03 mi (1,891.03 km) |
| Aalst to Sliven | 1,191.97 mi (1,918.30 km) |
| Aalst to Smolyan | 1,173.49 mi (1,888.55 km) |
