| Plymouth to Smolyan | 1,499.89 mi (2,413.84 km) |
| Plymouth to Sofia | 1,399.12 mi (2,251.67 km) |
| Plymouth to Sopot | 1,462.38 mi (2,353.47 km) |
| Plymouth to Sozopol | 1,599.15 mi (2,573.59 km) |
| Plymouth to Sredets | 1,579.73 mi (2,542.32 km) |
| Plymouth to Stamboliyski | 1,471.92 mi (2,368.83 km) |
| Plymouth to Stara Zagora | 1,509.27 mi (2,428.93 km) |
| Plymouth to Svilengrad | 1,557.67 mi (2,506.83 km) |
| Plymouth to Svishtov | 1,454.87 mi (2,341.39 km) |
| Plymouth to Targovishte | 1,521.22 mi (2,448.17 km) |
| Plymouth to Teteven | 1,431.87 mi (2,304.37 km) |
| Plymouth to Troyan | 1,452.59 mi (2,337.72 km) |
| Plymouth to Tryavna | 1,487.24 mi (2,393.48 km) |
| Plymouth to Tutrakan | 1,496.10 mi (2,407.74 km) |
| Plymouth to Varna | 1,580.76 mi (2,543.99 km) |
