| Leuven to Provadia | 1,188.85 mi (1,913.27 km) |
| Leuven to Radnevo | 1,163.47 mi (1,872.43 km) |
| Leuven to Radomir | 1,034.30 mi (1,664.54 km) |
| Leuven to Rakitovo | 1,103.82 mi (1,776.43 km) |
| Leuven to Rakovski | 1,125.19 mi (1,810.81 km) |
| Leuven to Razgrad | 1,137.19 mi (1,830.13 km) |
| Leuven to Razlog | 1,084.40 mi (1,745.17 km) |
| Leuven to Ruse | 1,102.68 mi (1,774.59 km) |
| Leuven to Samokov | 1,067.39 mi (1,717.80 km) |
| Leuven to Sandanski | 1,091.86 mi (1,757.19 km) |
| Leuven to Sevlievo | 1,099.95 mi (1,770.20 km) |
| Leuven to Shumen | 1,164.20 mi (1,873.60 km) |
| Leuven to Silistra | 1,146.23 mi (1,844.68 km) |
| Leuven to Sliven | 1,163.66 mi (1,872.72 km) |
| Leuven to Smolyan | 1,145.93 mi (1,844.20 km) |
