| Thiais to Smolyan | 1,188.72 mi (1,913.05 km) |
| Thiais to Sofia | 1,088.79 mi (1,752.23 km) |
| Thiais to Sopot | 1,153.26 mi (1,856.00 km) |
| Thiais to Sozopol | 1,292.61 mi (2,080.25 km) |
| Thiais to Sredets | 1,272.45 mi (2,047.80 km) |
| Thiais to Stamboliyski | 1,161.54 mi (1,869.31 km) |
| Thiais to Stara Zagora | 1,200.55 mi (1,932.10 km) |
| Thiais to Svilengrad | 1,248.06 mi (2,008.55 km) |
| Thiais to Svishtov | 1,149.09 mi (1,849.28 km) |
| Thiais to Targovishte | 1,215.78 mi (1,956.61 km) |
| Thiais to Teteven | 1,122.90 mi (1,807.13 km) |
| Thiais to Troyan | 1,144.00 mi (1,841.10 km) |
| Thiais to Tryavna | 1,179.44 mi (1,898.13 km) |
| Thiais to Tutrakan | 1,193.46 mi (1,920.69 km) |
| Thiais to Varna | 1,276.87 mi (2,054.93 km) |
