| Saarlouis to Popovo | 1,013.00 mi (1,630.26 km) |
| Saarlouis to Provadia | 1,070.81 mi (1,723.31 km) |
| Saarlouis to Radnevo | 1,039.27 mi (1,672.54 km) |
| Saarlouis to Radomir | 905.30 mi (1,456.93 km) |
| Saarlouis to Rakitovo | 975.14 mi (1,569.34 km) |
| Saarlouis to Rakovski | 999.13 mi (1,607.94 km) |
| Saarlouis to Razgrad | 1,018.85 mi (1,639.69 km) |
| Saarlouis to Razlog | 954.30 mi (1,535.80 km) |
| Saarlouis to Ruse | 984.50 mi (1,584.41 km) |
| Saarlouis to Samokov | 938.84 mi (1,510.92 km) |
| Saarlouis to Sandanski | 960.56 mi (1,545.86 km) |
| Saarlouis to Sevlievo | 976.83 mi (1,572.06 km) |
| Saarlouis to Shumen | 1,045.62 mi (1,682.76 km) |
| Saarlouis to Silistra | 1,031.92 mi (1,660.72 km) |
| Saarlouis to Sliven | 1,041.58 mi (1,676.26 km) |
