| Bastogne to Provadia | 1,128.14 mi (1,815.56 km) |
| Bastogne to Radnevo | 1,099.24 mi (1,769.06 km) |
| Bastogne to Radomir | 967.23 mi (1,556.61 km) |
| Bastogne to Rakitovo | 1,036.97 mi (1,668.85 km) |
| Bastogne to Rakovski | 1,059.87 mi (1,705.69 km) |
| Bastogne to Razgrad | 1,076.27 mi (1,732.10 km) |
| Bastogne to Razlog | 1,016.71 mi (1,636.24 km) |
| Bastogne to Ruse | 1,041.83 mi (1,676.67 km) |
| Bastogne to Samokov | 1,000.60 mi (1,610.32 km) |
| Bastogne to Sandanski | 1,023.46 mi (1,647.11 km) |
| Bastogne to Sevlievo | 1,036.31 mi (1,667.77 km) |
| Bastogne to Shumen | 1,103.16 mi (1,775.37 km) |
| Bastogne to Silistra | 1,087.58 mi (1,750.30 km) |
| Bastogne to Sliven | 1,100.64 mi (1,771.31 km) |
| Bastogne to Smolyan | 1,079.05 mi (1,736.57 km) |
