| Tongeren to Provadia | 1,154.97 mi (1,858.74 km) |
| Tongeren to Radnevo | 1,130.00 mi (1,818.55 km) |
| Tongeren to Radomir | 1,001.41 mi (1,611.61 km) |
| Tongeren to Rakitovo | 1,070.86 mi (1,723.39 km) |
| Tongeren to Rakovski | 1,091.90 mi (1,757.24 km) |
| Tongeren to Razgrad | 1,103.33 mi (1,775.63 km) |
| Tongeren to Razlog | 1,051.66 mi (1,692.49 km) |
| Tongeren to Ruse | 1,068.81 mi (1,720.09 km) |
| Tongeren to Samokov | 1,034.42 mi (1,664.75 km) |
| Tongeren to Sandanski | 1,059.34 mi (1,704.84 km) |
| Tongeren to Sevlievo | 1,066.39 mi (1,716.20 km) |
| Tongeren to Shumen | 1,130.34 mi (1,819.11 km) |
| Tongeren to Silistra | 1,112.23 mi (1,789.96 km) |
| Tongeren to Sliven | 1,130.01 mi (1,818.57 km) |
| Tongeren to Smolyan | 1,112.97 mi (1,791.16 km) |
