| Sirnak to Smolyan | 984.82 mi (1,584.91 km) |
| Sirnak to Sofia | 1,069.46 mi (1,721.13 km) |
| Sirnak to Sopot | 998.63 mi (1,607.14 km) |
| Sirnak to Sozopol | 850.12 mi (1,368.14 km) |
| Sirnak to Sredets | 872.98 mi (1,404.92 km) |
| Sirnak to Stamboliyski | 1,000.90 mi (1,610.80 km) |
| Sirnak to Stara Zagora | 950.50 mi (1,529.68 km) |
| Sirnak to Svilengrad | 911.75 mi (1,467.33 km) |
| Sirnak to Svishtov | 989.35 mi (1,592.21 km) |
| Sirnak to Targovishte | 922.56 mi (1,484.71 km) |
| Sirnak to Teteven | 1,027.07 mi (1,652.91 km) |
| Sirnak to Troyan | 1,004.50 mi (1,616.59 km) |
| Sirnak to Tryavna | 966.10 mi (1,554.79 km) |
| Sirnak to Tutrakan | 941.37 mi (1,514.99 km) |
| Sirnak to Varna | 859.14 mi (1,382.64 km) |
