| Cities | Distance |
|---|---|
| Tvrdosin to Popovo | 521.52 mi (839.30 km) |
| Tvrdosin to Provadia | 567.07 mi (912.62 km) |
| Tvrdosin to Radnevo | 574.47 mi (924.52 km) |
| Tvrdosin to Radomir | 496.19 mi (798.54 km) |
| Tvrdosin to Rakitovo | 552.73 mi (889.53 km) |
| Tvrdosin to Rakovski | 551.83 mi (888.08 km) |
| Tvrdosin to Razgrad | 519.69 mi (836.36 km) |
| Tvrdosin to Razlog | 548.24 mi (882.31 km) |
| Tvrdosin to Ruse | 486.82 mi (783.47 km) |
| Tvrdosin to Samokov | 520.21 mi (837.20 km) |
| Tvrdosin to Sandanski | 566.01 mi (910.90 km) |
| Tvrdosin to Sevlievo | 510.27 mi (821.20 km) |
| Tvrdosin to Shumen | 546.10 mi (878.86 km) |
| Tvrdosin to Silistra | 512.47 mi (824.75 km) |
| Tvrdosin to Sliven | 562.52 mi (905.28 km) |