| Igdir to Smolyan | 1,016.84 mi (1,636.44 km) |
| Igdir to Sofia | 1,089.20 mi (1,752.90 km) |
| Igdir to Sopot | 1,016.99 mi (1,636.69 km) |
| Igdir to Sozopol | 865.97 mi (1,393.64 km) |
| Igdir to Sredets | 890.92 mi (1,433.79 km) |
| Igdir to Stamboliyski | 1,026.11 mi (1,651.36 km) |
| Igdir to Stara Zagora | 970.22 mi (1,561.41 km) |
| Igdir to Svilengrad | 939.65 mi (1,512.22 km) |
| Igdir to Svishtov | 994.25 mi (1,600.09 km) |
| Igdir to Targovishte | 929.33 mi (1,495.61 km) |
| Igdir to Teteven | 1,042.86 mi (1,678.31 km) |
| Igdir to Troyan | 1,019.97 mi (1,641.48 km) |
| Igdir to Tryavna | 980.37 mi (1,577.75 km) |
| Igdir to Tutrakan | 937.31 mi (1,508.46 km) |
| Igdir to Varna | 862.68 mi (1,388.35 km) |
