| Ploermel to Smolyan | 1,391.51 mi (2,239.43 km) |
| Ploermel to Sofia | 1,294.37 mi (2,083.09 km) |
| Ploermel to Sopot | 1,361.21 mi (2,190.65 km) |
| Ploermel to Sozopol | 1,504.17 mi (2,420.72 km) |
| Ploermel to Sredets | 1,483.03 mi (2,386.70 km) |
| Ploermel to Stamboliyski | 1,366.66 mi (2,199.42 km) |
| Ploermel to Stara Zagora | 1,409.05 mi (2,267.64 km) |
| Ploermel to Svilengrad | 1,454.60 mi (2,340.95 km) |
| Ploermel to Svishtov | 1,362.13 mi (2,192.14 km) |
| Ploermel to Targovishte | 1,428.99 mi (2,299.74 km) |
| Ploermel to Teteven | 1,331.25 mi (2,142.44 km) |
| Ploermel to Troyan | 1,352.95 mi (2,177.37 km) |
| Ploermel to Tryavna | 1,389.57 mi (2,236.30 km) |
| Ploermel to Tutrakan | 1,409.64 mi (2,268.60 km) |
| Ploermel to Varna | 1,491.60 mi (2,400.49 km) |
