| Delft to Popovo | 1,173.68 mi (1,888.86 km) |
| Delft to Provadia | 1,228.33 mi (1,976.80 km) |
| Delft to Radnevo | 1,208.36 mi (1,944.66 km) |
| Delft to Radomir | 1,084.12 mi (1,744.73 km) |
| Delft to Rakitovo | 1,153.09 mi (1,855.73 km) |
| Delft to Rakovski | 1,171.89 mi (1,885.98 km) |
| Delft to Razgrad | 1,177.11 mi (1,894.37 km) |
| Delft to Razlog | 1,135.15 mi (1,826.85 km) |
| Delft to Ruse | 1,142.61 mi (1,838.85 km) |
| Delft to Samokov | 1,116.66 mi (1,797.08 km) |
| Delft to Sandanski | 1,143.85 mi (1,840.84 km) |
| Delft to Sevlievo | 1,144.10 mi (1,841.24 km) |
| Delft to Shumen | 1,204.22 mi (1,938.00 km) |
| Delft to Silistra | 1,182.86 mi (1,903.62 km) |
| Delft to Sliven | 1,206.65 mi (1,941.91 km) |
