| Airdrie to Smolyan | 1,618.18 mi (2,604.21 km) |
| Airdrie to Sofia | 1,513.89 mi (2,436.37 km) |
| Airdrie to Sopot | 1,566.51 mi (2,521.06 km) |
| Airdrie to Sozopol | 1,684.15 mi (2,710.37 km) |
| Airdrie to Sredets | 1,669.21 mi (2,686.34 km) |
| Airdrie to Stamboliyski | 1,584.56 mi (2,550.10 km) |
| Airdrie to Stara Zagora | 1,609.30 mi (2,589.92 km) |
| Airdrie to Svilengrad | 1,661.98 mi (2,674.70 km) |
| Airdrie to Svishtov | 1,541.16 mi (2,480.27 km) |
| Airdrie to Targovishte | 1,603.45 mi (2,580.51 km) |
| Airdrie to Teteven | 1,536.19 mi (2,472.26 km) |
| Airdrie to Troyan | 1,553.85 mi (2,500.68 km) |
| Airdrie to Tryavna | 1,582.69 mi (2,547.10 km) |
| Airdrie to Tutrakan | 1,567.05 mi (2,521.92 km) |
| Airdrie to Varna | 1,653.87 mi (2,661.65 km) |
