| Keerbergen to Provadia | 1,194.25 mi (1,921.95 km) |
| Keerbergen to Radnevo | 1,169.41 mi (1,881.99 km) |
| Keerbergen to Radomir | 1,040.72 mi (1,674.87 km) |
| Keerbergen to Rakitovo | 1,110.19 mi (1,786.68 km) |
| Keerbergen to Rakovski | 1,131.30 mi (1,820.66 km) |
| Keerbergen to Razgrad | 1,142.62 mi (1,838.87 km) |
| Keerbergen to Razlog | 1,090.91 mi (1,755.66 km) |
| Keerbergen to Ruse | 1,108.10 mi (1,783.32 km) |
| Keerbergen to Samokov | 1,073.75 mi (1,728.04 km) |
| Keerbergen to Sandanski | 1,098.50 mi (1,767.87 km) |
| Keerbergen to Sevlievo | 1,105.81 mi (1,779.63 km) |
| Keerbergen to Shumen | 1,169.65 mi (1,882.36 km) |
| Keerbergen to Silistra | 1,151.33 mi (1,852.88 km) |
| Keerbergen to Sliven | 1,169.40 mi (1,881.97 km) |
| Keerbergen to Smolyan | 1,152.30 mi (1,854.45 km) |
