| Sliedrecht to Popovo | 1,152.53 mi (1,854.82 km) |
| Sliedrecht to Provadia | 1,207.33 mi (1,943.01 km) |
| Sliedrecht to Radnevo | 1,186.90 mi (1,910.13 km) |
| Sliedrecht to Radomir | 1,062.36 mi (1,709.70 km) |
| Sliedrecht to Rakitovo | 1,131.36 mi (1,820.75 km) |
| Sliedrecht to Rakovski | 1,150.31 mi (1,851.25 km) |
| Sliedrecht to Razgrad | 1,156.06 mi (1,860.50 km) |
| Sliedrecht to Razlog | 1,113.34 mi (1,791.76 km) |
| Sliedrecht to Ruse | 1,121.55 mi (1,804.96 km) |
| Sliedrecht to Samokov | 1,094.92 mi (1,762.10 km) |
| Sliedrecht to Sandanski | 1,121.99 mi (1,805.67 km) |
| Sliedrecht to Sevlievo | 1,122.69 mi (1,806.79 km) |
| Sliedrecht to Shumen | 1,183.16 mi (1,904.12 km) |
| Sliedrecht to Silistra | 1,162.13 mi (1,870.27 km) |
| Sliedrecht to Sliven | 1,185.34 mi (1,907.62 km) |
