| Trentham to Smolyan | 1,472.46 mi (2,369.70 km) |
| Trentham to Sofia | 1,368.93 mi (2,203.08 km) |
| Trentham to Sopot | 1,426.66 mi (2,295.99 km) |
| Trentham to Sozopol | 1,553.84 mi (2,500.67 km) |
| Trentham to Sredets | 1,536.74 mi (2,473.14 km) |
| Trentham to Stamboliyski | 1,441.07 mi (2,319.18 km) |
| Trentham to Stara Zagora | 1,471.61 mi (2,368.32 km) |
| Trentham to Svilengrad | 1,522.74 mi (2,450.61 km) |
| Trentham to Svishtov | 1,409.21 mi (2,267.91 km) |
| Trentham to Targovishte | 1,473.86 mi (2,371.95 km) |
| Trentham to Teteven | 1,396.02 mi (2,246.68 km) |
| Trentham to Troyan | 1,415.19 mi (2,277.53 km) |
| Trentham to Tryavna | 1,446.87 mi (2,328.52 km) |
| Trentham to Tutrakan | 1,442.47 mi (2,321.42 km) |
| Trentham to Varna | 1,528.91 mi (2,460.54 km) |
