| Thorne to Devnya | 1,478.00 mi (2,378.61 km) |
| Thorne to Dimitrovgrad | 1,454.79 mi (2,341.26 km) |
| Thorne to Dobrich | 1,473.37 mi (2,371.15 km) |
| Thorne to Dospat | 1,420.02 mi (2,285.30 km) |
| Thorne to Dupnitsa | 1,351.75 mi (2,175.44 km) |
| Thorne to Elhovo | 1,486.22 mi (2,391.84 km) |
| Thorne to Etropole | 1,357.99 mi (2,185.48 km) |
| Thorne to Gabrovo | 1,407.11 mi (2,264.52 km) |
| Thorne to Gorna Oryahovitsa | 1,409.20 mi (2,267.89 km) |
| Thorne to Gotse Delchev | 1,408.04 mi (2,266.03 km) |
| Thorne to Harmanli | 1,471.60 mi (2,368.32 km) |
| Thorne to Haskovo | 1,458.98 mi (2,348.00 km) |
| Thorne to Ihtiman | 1,369.53 mi (2,204.05 km) |
| Thorne to Isperih | 1,427.70 mi (2,297.66 km) |
| Thorne to Kardzhali | 1,464.79 mi (2,357.35 km) |
