| Leidschendam to Smolyan | 1,196.05 mi (1,924.86 km) |
| Leidschendam to Sofia | 1,092.02 mi (1,757.43 km) |
| Leidschendam to Sopot | 1,147.72 mi (1,847.07 km) |
| Leidschendam to Sozopol | 1,272.23 mi (2,047.46 km) |
| Leidschendam to Sredets | 1,255.63 mi (2,020.74 km) |
| Leidschendam to Stamboliyski | 1,163.60 mi (1,872.64 km) |
| Leidschendam to Stara Zagora | 1,191.96 mi (1,918.28 km) |
| Leidschendam to Svilengrad | 1,243.70 mi (2,001.54 km) |
| Leidschendam to Svishtov | 1,127.83 mi (1,815.06 km) |
| Leidschendam to Targovishte | 1,192.01 mi (1,918.36 km) |
| Leidschendam to Teteven | 1,117.15 mi (1,797.88 km) |
| Leidschendam to Troyan | 1,135.80 mi (1,827.89 km) |
| Leidschendam to Tryavna | 1,166.60 mi (1,877.46 km) |
| Leidschendam to Tutrakan | 1,159.70 mi (1,866.36 km) |
| Leidschendam to Varna | 1,246.27 mi (2,005.68 km) |
