| Illingen to Devnya | 1,063.42 mi (1,711.40 km) |
| Illingen to Dimitrovgrad | 1,024.11 mi (1,648.15 km) |
| Illingen to Dobrich | 1,062.88 mi (1,710.54 km) |
| Illingen to Dospat | 982.19 mi (1,580.69 km) |
| Illingen to Dupnitsa | 913.59 mi (1,470.29 km) |
| Illingen to Elhovo | 1,059.89 mi (1,705.72 km) |
| Illingen to Etropole | 926.27 mi (1,490.69 km) |
| Illingen to Gabrovo | 980.75 mi (1,578.37 km) |
| Illingen to Gorna Oryahovitsa | 986.26 mi (1,587.23 km) |
| Illingen to Gotse Delchev | 968.45 mi (1,558.57 km) |
| Illingen to Harmanli | 1,041.32 mi (1,675.84 km) |
| Illingen to Haskovo | 1,027.49 mi (1,653.58 km) |
| Illingen to Ihtiman | 934.72 mi (1,504.28 km) |
| Illingen to Isperih | 1,014.26 mi (1,632.30 km) |
| Illingen to Kardzhali | 1,030.99 mi (1,659.21 km) |
