| Plochingen to Smolyan | 890.35 mi (1,432.89 km) |
| Plochingen to Sofia | 787.64 mi (1,267.58 km) |
| Plochingen to Sopot | 848.23 mi (1,365.10 km) |
| Plochingen to Sozopol | 982.22 mi (1,580.73 km) |
| Plochingen to Sredets | 963.29 mi (1,550.27 km) |
| Plochingen to Stamboliyski | 860.24 mi (1,384.42 km) |
| Plochingen to Stara Zagora | 894.42 mi (1,439.43 km) |
| Plochingen to Svilengrad | 944.09 mi (1,519.36 km) |
| Plochingen to Svishtov | 837.69 mi (1,348.13 km) |
| Plochingen to Targovishte | 903.86 mi (1,454.62 km) |
| Plochingen to Teteven | 817.59 mi (1,315.79 km) |
| Plochingen to Troyan | 837.72 mi (1,348.19 km) |
| Plochingen to Tryavna | 871.40 mi (1,402.38 km) |
| Plochingen to Tutrakan | 878.44 mi (1,413.70 km) |
| Plochingen to Varna | 963.07 mi (1,549.92 km) |
