| Idar-Oberstein to Devnya | 1,058.82 mi (1,704.00 km) |
| Idar-Oberstein to Dimitrovgrad | 1,022.58 mi (1,645.68 km) |
| Idar-Oberstein to Dobrich | 1,057.61 mi (1,702.05 km) |
| Idar-Oberstein to Dospat | 982.42 mi (1,581.05 km) |
| Idar-Oberstein to Dupnitsa | 913.85 mi (1,470.69 km) |
| Idar-Oberstein to Elhovo | 1,057.46 mi (1,701.81 km) |
| Idar-Oberstein to Etropole | 924.86 mi (1,488.42 km) |
| Idar-Oberstein to Gabrovo | 978.23 mi (1,574.31 km) |
| Idar-Oberstein to Gorna Oryahovitsa | 983.06 mi (1,582.08 km) |
| Idar-Oberstein to Gotse Delchev | 969.18 mi (1,559.74 km) |
| Idar-Oberstein to Harmanli | 1,039.71 mi (1,673.26 km) |
| Idar-Oberstein to Haskovo | 1,026.15 mi (1,651.42 km) |
| Idar-Oberstein to Ihtiman | 934.08 mi (1,503.26 km) |
| Idar-Oberstein to Isperih | 1,009.39 mi (1,624.46 km) |
| Idar-Oberstein to Kardzhali | 1,030.20 mi (1,657.95 km) |
