| Ilsenburg to Devnya | 984.61 mi (1,584.58 km) |
| Ilsenburg to Dimitrovgrad | 973.66 mi (1,566.95 km) |
| Ilsenburg to Dobrich | 978.11 mi (1,574.12 km) |
| Ilsenburg to Dospat | 948.62 mi (1,526.66 km) |
| Ilsenburg to Dupnitsa | 882.22 mi (1,419.80 km) |
| Ilsenburg to Elhovo | 1,000.56 mi (1,610.24 km) |
| Ilsenburg to Etropole | 879.52 mi (1,415.46 km) |
| Ilsenburg to Gabrovo | 922.45 mi (1,484.55 km) |
| Ilsenburg to Gorna Oryahovitsa | 921.72 mi (1,483.37 km) |
| Ilsenburg to Gotse Delchev | 939.80 mi (1,512.46 km) |
| Ilsenburg to Harmanli | 989.83 mi (1,592.98 km) |
| Ilsenburg to Haskovo | 978.67 mi (1,575.01 km) |
| Ilsenburg to Ihtiman | 894.70 mi (1,439.89 km) |
| Ilsenburg to Isperih | 934.15 mi (1,503.37 km) |
| Ilsenburg to Kardzhali | 987.08 mi (1,588.55 km) |
