| Cities | Distance |
|---|---|
| Tvrdosin to Smolyan | 590.40 mi (950.16 km) |
| Tvrdosin to Sofia | 492.71 mi (792.95 km) |
| Tvrdosin to Sopot | 524.57 mi (844.21 km) |
| Tvrdosin to Sozopol | 617.29 mi (993.44 km) |
| Tvrdosin to Sredets | 606.20 mi (975.59 km) |
| Tvrdosin to Stamboliyski | 552.14 mi (888.58 km) |
| Tvrdosin to Stara Zagora | 559.30 mi (900.11 km) |
| Tvrdosin to Svilengrad | 613.26 mi (986.95 km) |
| Tvrdosin to Svishtov | 481.45 mi (774.82 km) |
| Tvrdosin to Targovishte | 537.40 mi (864.85 km) |
| Tvrdosin to Teteven | 497.28 mi (800.30 km) |
| Tvrdosin to Troyan | 509.42 mi (819.84 km) |
| Tvrdosin to Tryavna | 529.53 mi (852.20 km) |
| Tvrdosin to Tutrakan | 494.87 mi (796.41 km) |
| Tvrdosin to Varna | 580.81 mi (934.72 km) |