| Stranraer to Smolyan | 1,629.20 mi (2,621.94 km) |
| Stranraer to Sofia | 1,525.12 mi (2,454.44 km) |
| Stranraer to Sopot | 1,580.19 mi (2,543.07 km) |
| Stranraer to Sozopol | 1,702.25 mi (2,739.50 km) |
| Stranraer to Sredets | 1,686.34 mi (2,713.91 km) |
| Stranraer to Stamboliyski | 1,596.58 mi (2,569.45 km) |
| Stranraer to Stara Zagora | 1,624.02 mi (2,613.61 km) |
| Stranraer to Svilengrad | 1,676.07 mi (2,697.38 km) |
| Stranraer to Svishtov | 1,558.33 mi (2,507.89 km) |
| Stranraer to Targovishte | 1,621.74 mi (2,609.94 km) |
| Stranraer to Teteven | 1,549.68 mi (2,493.97 km) |
| Stranraer to Troyan | 1,568.05 mi (2,523.54 km) |
| Stranraer to Tryavna | 1,598.22 mi (2,572.09 km) |
| Stranraer to Tutrakan | 1,587.40 mi (2,554.68 km) |
| Stranraer to Varna | 1,674.20 mi (2,694.37 km) |
