| Delft to Smolyan | 1,195.15 mi (1,923.42 km) |
| Delft to Sofia | 1,091.16 mi (1,756.05 km) |
| Delft to Sopot | 1,147.07 mi (1,846.03 km) |
| Delft to Sozopol | 1,271.96 mi (2,047.02 km) |
| Delft to Sredets | 1,255.28 mi (2,020.17 km) |
| Delft to Stamboliyski | 1,162.80 mi (1,871.35 km) |
| Delft to Stara Zagora | 1,191.40 mi (1,917.38 km) |
| Delft to Svilengrad | 1,243.07 mi (2,000.53 km) |
| Delft to Svishtov | 1,127.51 mi (1,814.55 km) |
| Delft to Targovishte | 1,191.78 mi (1,917.98 km) |
| Delft to Teteven | 1,116.50 mi (1,796.83 km) |
| Delft to Troyan | 1,135.21 mi (1,826.94 km) |
| Delft to Tryavna | 1,166.12 mi (1,876.69 km) |
| Delft to Tutrakan | 1,159.67 mi (1,866.31 km) |
| Delft to Varna | 1,246.21 mi (2,005.58 km) |
