| Caguas to Smolyan | 5,427.37 mi (8,734.51 km) |
| Caguas to Sofia | 5,340.85 mi (8,595.27 km) |
| Caguas to Sopot | 5,411.76 mi (8,709.38 km) |
| Caguas to Sozopol | 5,560.96 mi (8,949.51 km) |
| Caguas to Sredets | 5,537.68 mi (8,912.04 km) |
| Caguas to Stamboliyski | 5,409.74 mi (8,706.13 km) |
| Caguas to Stara Zagora | 5,459.86 mi (8,786.80 km) |
| Caguas to Svilengrad | 5,499.00 mi (8,849.79 km) |
| Caguas to Svishtov | 5,424.68 mi (8,730.17 km) |
| Caguas to Targovishte | 5,490.97 mi (8,836.86 km) |
| Caguas to Teteven | 5,383.53 mi (8,663.96 km) |
| Caguas to Troyan | 5,406.20 mi (8,700.43 km) |
| Caguas to Tryavna | 5,444.91 mi (8,762.73 km) |
| Caguas to Tutrakan | 5,478.15 mi (8,816.23 km) |
| Caguas to Varna | 5,556.23 mi (8,941.88 km) |
