| Ponce to Smolyan | 5,466.33 mi (8,797.20 km) |
| Ponce to Sofia | 5,379.60 mi (8,657.64 km) |
| Ponce to Sopot | 5,450.46 mi (8,771.67 km) |
| Ponce to Sozopol | 5,599.58 mi (9,011.66 km) |
| Ponce to Sredets | 5,576.34 mi (8,974.26 km) |
| Ponce to Stamboliyski | 5,448.57 mi (8,768.63 km) |
| Ponce to Stara Zagora | 5,498.58 mi (8,849.10 km) |
| Ponce to Svilengrad | 5,537.85 mi (8,912.30 km) |
| Ponce to Svishtov | 5,463.11 mi (8,792.03 km) |
| Ponce to Targovishte | 5,529.44 mi (8,898.77 km) |
| Ponce to Teteven | 5,422.19 mi (8,726.18 km) |
| Ponce to Troyan | 5,444.85 mi (8,762.63 km) |
| Ponce to Tryavna | 5,483.52 mi (8,824.88 km) |
| Ponce to Tutrakan | 5,516.42 mi (8,877.81 km) |
| Ponce to Varna | 5,594.64 mi (9,003.70 km) |
