| Gronau to Devnya | 1,132.58 mi (1,822.72 km) |
| Gronau to Dimitrovgrad | 1,114.22 mi (1,793.16 km) |
| Gronau to Dobrich | 1,127.36 mi (1,814.32 km) |
| Gronau to Dospat | 1,083.81 mi (1,744.23 km) |
| Gronau to Dupnitsa | 1,016.22 mi (1,635.45 km) |
| Gronau to Elhovo | 1,143.76 mi (1,840.70 km) |
| Gronau to Etropole | 1,018.40 mi (1,638.95 km) |
| Gronau to Gabrovo | 1,064.95 mi (1,713.87 km) |
| Gronau to Gorna Oryahovitsa | 1,065.90 mi (1,715.40 km) |
| Gronau to Gotse Delchev | 1,073.30 mi (1,727.31 km) |
| Gronau to Harmanli | 1,130.78 mi (1,819.81 km) |
| Gronau to Haskovo | 1,118.78 mi (1,800.50 km) |
| Gronau to Ihtiman | 1,031.60 mi (1,660.20 km) |
| Gronau to Isperih | 1,082.20 mi (1,741.63 km) |
| Gronau to Kardzhali | 1,125.77 mi (1,811.75 km) |
