| Johnstone to Smolyan | 1,635.81 mi (2,632.58 km) |
| Johnstone to Sofia | 1,531.53 mi (2,464.76 km) |
| Johnstone to Sopot | 1,584.47 mi (2,549.96 km) |
| Johnstone to Sozopol | 1,702.65 mi (2,740.14 km) |
| Johnstone to Sredets | 1,687.60 mi (2,715.93 km) |
| Johnstone to Stamboliyski | 1,602.31 mi (2,578.67 km) |
| Johnstone to Stara Zagora | 1,627.40 mi (2,619.04 km) |
| Johnstone to Svilengrad | 1,680.01 mi (2,703.71 km) |
| Johnstone to Svishtov | 1,559.54 mi (2,509.84 km) |
| Johnstone to Targovishte | 1,621.96 mi (2,610.30 km) |
| Johnstone to Teteven | 1,554.12 mi (2,501.12 km) |
| Johnstone to Troyan | 1,571.87 mi (2,529.69 km) |
| Johnstone to Tryavna | 1,600.88 mi (2,576.37 km) |
| Johnstone to Tutrakan | 1,585.78 mi (2,552.06 km) |
| Johnstone to Varna | 1,672.61 mi (2,691.80 km) |
