| Grobbendonk to Provadia | 1,195.00 mi (1,923.17 km) |
| Grobbendonk to Radnevo | 1,171.31 mi (1,885.04 km) |
| Grobbendonk to Radomir | 1,043.68 mi (1,679.64 km) |
| Grobbendonk to Rakitovo | 1,113.05 mi (1,791.28 km) |
| Grobbendonk to Rakovski | 1,133.59 mi (1,824.34 km) |
| Grobbendonk to Razgrad | 1,143.46 mi (1,840.22 km) |
| Grobbendonk to Razlog | 1,094.10 mi (1,760.78 km) |
| Grobbendonk to Ruse | 1,108.94 mi (1,784.66 km) |
| Grobbendonk to Samokov | 1,076.60 mi (1,732.62 km) |
| Grobbendonk to Sandanski | 1,101.97 mi (1,773.46 km) |
| Grobbendonk to Sevlievo | 1,107.53 mi (1,782.40 km) |
| Grobbendonk to Shumen | 1,170.51 mi (1,883.75 km) |
| Grobbendonk to Silistra | 1,151.49 mi (1,853.14 km) |
| Grobbendonk to Sliven | 1,170.89 mi (1,884.37 km) |
| Grobbendonk to Smolyan | 1,155.15 mi (1,859.04 km) |
