| Diest to Provadia | 1,176.49 mi (1,893.38 km) |
| Diest to Radnevo | 1,152.09 mi (1,854.10 km) |
| Diest to Radomir | 1,023.90 mi (1,647.81 km) |
| Diest to Rakitovo | 1,093.32 mi (1,759.52 km) |
| Diest to Rakovski | 1,114.15 mi (1,793.05 km) |
| Diest to Razgrad | 1,124.89 mi (1,810.33 km) |
| Diest to Razlog | 1,074.22 mi (1,728.79 km) |
| Diest to Ruse | 1,090.37 mi (1,754.78 km) |
| Diest to Samokov | 1,056.88 mi (1,700.88 km) |
| Diest to Sandanski | 1,081.97 mi (1,741.26 km) |
| Diest to Sevlievo | 1,088.41 mi (1,751.62 km) |
| Diest to Shumen | 1,151.92 mi (1,853.84 km) |
| Diest to Silistra | 1,133.39 mi (1,824.02 km) |
| Diest to Sliven | 1,151.91 mi (1,853.82 km) |
| Diest to Smolyan | 1,135.43 mi (1,827.29 km) |
