| Schertz to Smolyan | 6,322.99 mi (10,175.88 km) |
| Schertz to Sofia | 6,219.10 mi (10,008.67 km) |
| Schertz to Sopot | 6,274.48 mi (10,097.80 km) |
| Schertz to Sozopol | 6,393.44 mi (10,289.24 km) |
| Schertz to Sredets | 6,378.66 mi (10,265.46 km) |
| Schertz to Stamboliyski | 6,290.78 mi (10,124.04 km) |
| Schertz to Stara Zagora | 6,318.03 mi (10,167.89 km) |
| Schertz to Svilengrad | 6,370.30 mi (10,252.00 km) |
| Schertz to Svishtov | 6,250.61 mi (10,059.38 km) |
| Schertz to Targovishte | 6,312.72 mi (10,159.34 km) |
| Schertz to Teteven | 6,243.99 mi (10,048.73 km) |
| Schertz to Troyan | 6,262.22 mi (10,078.07 km) |
| Schertz to Tryavna | 6,291.82 mi (10,125.70 km) |
| Schertz to Tutrakan | 6,275.21 mi (10,098.97 km) |
| Schertz to Varna | 6,361.89 mi (10,238.48 km) |
