| Panama City to Smolyan | 5,783.78 mi (9,308.10 km) |
| Panama City to Sofia | 5,682.08 mi (9,144.43 km) |
| Panama City to Sopot | 5,743.25 mi (9,242.87 km) |
| Panama City to Sozopol | 5,873.93 mi (9,453.17 km) |
| Panama City to Sredets | 5,856.33 mi (9,424.85 km) |
| Panama City to Stamboliyski | 5,754.83 mi (9,261.50 km) |
| Panama City to Stara Zagora | 5,789.23 mi (9,316.86 km) |
| Panama City to Svilengrad | 5,839.14 mi (9,397.18 km) |
| Panama City to Svishtov | 5,729.18 mi (9,220.22 km) |
| Panama City to Targovishte | 5,794.13 mi (9,324.76 km) |
| Panama City to Teteven | 5,712.61 mi (9,193.55 km) |
| Panama City to Troyan | 5,732.57 mi (9,225.67 km) |
| Panama City to Tryavna | 5,765.51 mi (9,278.70 km) |
| Panama City to Tutrakan | 5,762.70 mi (9,274.17 km) |
| Panama City to Varna | 5,849.24 mi (9,413.45 km) |
