| Sluis to Popovo | 1,196.06 mi (1,924.88 km) |
| Sluis to Provadia | 1,252.05 mi (2,014.98 km) |
| Sluis to Radnevo | 1,227.33 mi (1,975.20 km) |
| Sluis to Radomir | 1,098.42 mi (1,767.73 km) |
| Sluis to Rakitovo | 1,167.93 mi (1,879.60 km) |
| Sluis to Rakovski | 1,189.18 mi (1,913.80 km) |
| Sluis to Razgrad | 1,200.44 mi (1,931.92 km) |
| Sluis to Razlog | 1,148.53 mi (1,848.38 km) |
| Sluis to Ruse | 1,165.92 mi (1,876.37 km) |
| Sluis to Samokov | 1,131.50 mi (1,820.97 km) |
| Sluis to Sandanski | 1,155.98 mi (1,860.37 km) |
| Sluis to Sevlievo | 1,163.73 mi (1,872.85 km) |
| Sluis to Shumen | 1,227.47 mi (1,975.43 km) |
| Sluis to Silistra | 1,208.92 mi (1,945.57 km) |
| Sluis to Sliven | 1,227.32 mi (1,975.19 km) |
