| Pontypridd to Smolyan | 1,487.75 mi (2,394.31 km) |
| Pontypridd to Sofia | 1,385.46 mi (2,229.68 km) |
| Pontypridd to Sopot | 1,446.32 mi (2,327.62 km) |
| Pontypridd to Sozopol | 1,578.95 mi (2,541.07 km) |
| Pontypridd to Sredets | 1,560.55 mi (2,511.47 km) |
| Pontypridd to Stamboliyski | 1,458.14 mi (2,346.64 km) |
| Pontypridd to Stara Zagora | 1,492.41 mi (2,401.80 km) |
| Pontypridd to Svilengrad | 1,542.18 mi (2,481.91 km) |
| Pontypridd to Svishtov | 1,434.19 mi (2,308.11 km) |
| Pontypridd to Targovishte | 1,499.91 mi (2,413.87 km) |
| Pontypridd to Teteven | 1,415.67 mi (2,278.31 km) |
| Pontypridd to Troyan | 1,435.73 mi (2,310.58 km) |
| Pontypridd to Tryavna | 1,469.08 mi (2,364.26 km) |
| Pontypridd to Tutrakan | 1,471.83 mi (2,368.69 km) |
| Pontypridd to Varna | 1,557.49 mi (2,506.54 km) |
