| Tvrdosin to Devnya | 569.51 mi (916.54 km) |
| Tvrdosin to Dimitrovgrad | 581.30 mi (935.52 km) |
| Tvrdosin to Dobrich | 559.82 mi (900.95 km) |
| Tvrdosin to Dospat | 575.73 mi (926.55 km) |
| Tvrdosin to Dupnitsa | 517.57 mi (832.95 km) |
| Tvrdosin to Elhovo | 599.04 mi (964.06 km) |
| Tvrdosin to Etropole | 496.91 mi (799.70 km) |
| Tvrdosin to Gabrovo | 525.31 mi (845.41 km) |
| Tvrdosin to Gorna Oryahovitsa | 519.06 mi (835.35 km) |
| Tvrdosin to Gotse Delchev | 573.40 mi (922.80 km) |
| Tvrdosin to Harmanli | 595.71 mi (958.71 km) |
| Tvrdosin to Haskovo | 587.64 mi (945.72 km) |
| Tvrdosin to Ihtiman | 518.52 mi (834.48 km) |
| Tvrdosin to Isperih | 519.49 mi (836.04 km) |
| Tvrdosin to Kardzhali | 600.51 mi (966.42 km) |
