| Hoeilaart to Provadia | 1,196.16 mi (1,925.04 km) |
| Hoeilaart to Radnevo | 1,169.89 mi (1,882.76 km) |
| Hoeilaart to Radomir | 1,039.85 mi (1,673.48 km) |
| Hoeilaart to Rakitovo | 1,109.45 mi (1,785.49 km) |
| Hoeilaart to Rakovski | 1,131.29 mi (1,820.64 km) |
| Hoeilaart to Razgrad | 1,144.45 mi (1,841.81 km) |
| Hoeilaart to Razlog | 1,089.75 mi (1,753.78 km) |
| Hoeilaart to Ruse | 1,109.95 mi (1,786.29 km) |
| Hoeilaart to Samokov | 1,073.04 mi (1,726.89 km) |
| Hoeilaart to Sandanski | 1,096.97 mi (1,765.40 km) |
| Hoeilaart to Sevlievo | 1,106.52 mi (1,780.78 km) |
| Hoeilaart to Shumen | 1,171.43 mi (1,885.24 km) |
| Hoeilaart to Silistra | 1,154.00 mi (1,857.18 km) |
| Hoeilaart to Sliven | 1,170.40 mi (1,883.58 km) |
| Hoeilaart to Smolyan | 1,151.56 mi (1,853.26 km) |
