| Houthulst to Dimitrovgrad | 1,233.77 mi (1,985.56 km) |
| Houthulst to Dobrich | 1,266.03 mi (2,037.48 km) |
| Houthulst to Dospat | 1,193.61 mi (1,920.92 km) |
| Houthulst to Dupnitsa | 1,125.02 mi (1,810.55 km) |
| Houthulst to Elhovo | 1,268.33 mi (2,041.18 km) |
| Houthulst to Etropole | 1,136.09 mi (1,828.36 km) |
| Houthulst to Gabrovo | 1,189.07 mi (1,913.63 km) |
| Houthulst to Gorna Oryahovitsa | 1,193.51 mi (1,920.76 km) |
| Houthulst to Gotse Delchev | 1,180.22 mi (1,899.37 km) |
| Houthulst to Harmanli | 1,250.89 mi (2,013.11 km) |
| Houthulst to Haskovo | 1,237.38 mi (1,991.36 km) |
| Houthulst to Ihtiman | 1,145.37 mi (1,843.30 km) |
| Houthulst to Isperih | 1,218.34 mi (1,960.73 km) |
| Houthulst to Kardzhali | 1,241.49 mi (1,997.98 km) |
| Houthulst to Karlovo | 1,176.71 mi (1,893.74 km) |
