| Thornton to Devnya | 1,516.57 mi (2,440.68 km) |
| Thornton to Dimitrovgrad | 1,493.32 mi (2,403.27 km) |
| Thornton to Dobrich | 1,511.90 mi (2,433.17 km) |
| Thornton to Dospat | 1,458.40 mi (2,347.06 km) |
| Thornton to Dupnitsa | 1,390.11 mi (2,237.17 km) |
| Thornton to Elhovo | 1,524.79 mi (2,453.91 km) |
| Thornton to Etropole | 1,396.50 mi (2,247.44 km) |
| Thornton to Gabrovo | 1,445.68 mi (2,326.59 km) |
| Thornton to Gorna Oryahovitsa | 1,447.78 mi (2,329.98 km) |
| Thornton to Gotse Delchev | 1,446.36 mi (2,327.69 km) |
| Thornton to Harmanli | 1,510.14 mi (2,430.33 km) |
| Thornton to Haskovo | 1,497.50 mi (2,409.99 km) |
| Thornton to Ihtiman | 1,407.98 mi (2,265.93 km) |
| Thornton to Isperih | 1,466.26 mi (2,359.72 km) |
| Thornton to Kardzhali | 1,503.27 mi (2,419.28 km) |
