| Estero to Smolyan | 5,801.13 mi (9,336.02 km) |
| Estero to Sofia | 5,701.87 mi (9,176.28 km) |
| Estero to Sopot | 5,766.20 mi (9,279.80 km) |
| Estero to Sozopol | 5,903.04 mi (9,500.03 km) |
| Estero to Sredets | 5,883.84 mi (9,469.12 km) |
| Estero to Stamboliyski | 5,774.59 mi (9,293.31 km) |
| Estero to Stara Zagora | 5,813.27 mi (9,355.56 km) |
| Estero to Svilengrad | 5,861.17 mi (9,432.64 km) |
| Estero to Svishtov | 5,758.53 mi (9,267.47 km) |
| Estero to Targovishte | 5,824.64 mi (9,373.85 km) |
| Estero to Teteven | 5,735.76 mi (9,230.81 km) |
| Estero to Troyan | 5,756.63 mi (9,264.40 km) |
| Estero to Tryavna | 5,791.40 mi (9,320.36 km) |
| Estero to Tutrakan | 5,797.33 mi (9,329.90 km) |
| Estero to Varna | 5,882.91 mi (9,467.62 km) |
