| Illertissen to Devnya | 908.84 mi (1,462.64 km) |
| Illertissen to Dimitrovgrad | 865.78 mi (1,393.34 km) |
| Illertissen to Dobrich | 909.49 mi (1,463.68 km) |
| Illertissen to Dospat | 822.88 mi (1,324.29 km) |
| Illertissen to Dupnitsa | 754.28 mi (1,213.89 km) |
| Illertissen to Elhovo | 902.37 mi (1,452.23 km) |
| Illertissen to Etropole | 767.89 mi (1,235.80 km) |
| Illertissen to Gabrovo | 823.40 mi (1,325.13 km) |
| Illertissen to Gorna Oryahovitsa | 829.72 mi (1,335.30 km) |
| Illertissen to Gotse Delchev | 809.00 mi (1,301.97 km) |
| Illertissen to Harmanli | 883.04 mi (1,421.11 km) |
| Illertissen to Haskovo | 869.01 mi (1,398.53 km) |
| Illertissen to Ihtiman | 775.80 mi (1,248.53 km) |
| Illertissen to Isperih | 860.22 mi (1,384.39 km) |
| Illertissen to Kardzhali | 872.13 mi (1,403.55 km) |
