| Frauenfeld to Devnya | 951.29 mi (1,530.95 km) |
| Frauenfeld to Dimitrovgrad | 900.20 mi (1,448.72 km) |
| Frauenfeld to Dobrich | 953.64 mi (1,534.73 km) |
| Frauenfeld to Dospat | 852.45 mi (1,371.89 km) |
| Frauenfeld to Dupnitsa | 784.12 mi (1,261.92 km) |
| Frauenfeld to Elhovo | 939.08 mi (1,511.31 km) |
| Frauenfeld to Etropole | 802.50 mi (1,291.49 km) |
| Frauenfeld to Gabrovo | 860.79 mi (1,385.31 km) |
| Frauenfeld to Gorna Oryahovitsa | 868.92 mi (1,398.39 km) |
| Frauenfeld to Gotse Delchev | 837.15 mi (1,347.27 km) |
| Frauenfeld to Harmanli | 917.56 mi (1,476.67 km) |
| Frauenfeld to Haskovo | 902.87 mi (1,453.02 km) |
| Frauenfeld to Ihtiman | 808.13 mi (1,300.56 km) |
| Frauenfeld to Isperih | 903.62 mi (1,454.23 km) |
| Frauenfeld to Kardzhali | 904.40 mi (1,455.49 km) |
