| Istres to Devnya | 1,130.74 mi (1,819.76 km) |
| Istres to Dimitrovgrad | 1,047.35 mi (1,685.54 km) |
| Istres to Dobrich | 1,140.50 mi (1,835.46 km) |
| Istres to Dospat | 981.86 mi (1,580.15 km) |
| Istres to Dupnitsa | 919.94 mi (1,480.50 km) |
| Istres to Elhovo | 1,094.03 mi (1,760.67 km) |
| Istres to Etropole | 956.98 mi (1,540.10 km) |
| Istres to Gabrovo | 1,023.23 mi (1,646.73 km) |
| Istres to Gorna Oryahovitsa | 1,038.64 mi (1,671.53 km) |
| Istres to Gotse Delchev | 961.55 mi (1,547.47 km) |
| Istres to Harmanli | 1,064.15 mi (1,712.59 km) |
| Istres to Haskovo | 1,047.45 mi (1,685.71 km) |
| Istres to Ihtiman | 952.59 mi (1,533.04 km) |
| Istres to Isperih | 1,089.59 mi (1,753.53 km) |
| Istres to Kardzhali | 1,041.98 mi (1,676.91 km) |
