| Gundelfingen to Devnya | 1,005.22 mi (1,617.75 km) |
| Gundelfingen to Dimitrovgrad | 956.65 mi (1,539.58 km) |
| Gundelfingen to Dobrich | 1,006.88 mi (1,620.41 km) |
| Gundelfingen to Dospat | 909.93 mi (1,464.40 km) |
| Gundelfingen to Dupnitsa | 841.52 mi (1,354.30 km) |
| Gundelfingen to Elhovo | 994.94 mi (1,601.20 km) |
| Gundelfingen to Etropole | 858.85 mi (1,382.18 km) |
| Gundelfingen to Gabrovo | 916.41 mi (1,474.82 km) |
| Gundelfingen to Gorna Oryahovitsa | 923.97 mi (1,486.99 km) |
| Gundelfingen to Gotse Delchev | 894.88 mi (1,440.17 km) |
| Gundelfingen to Harmanli | 973.99 mi (1,567.49 km) |
| Gundelfingen to Haskovo | 959.46 mi (1,544.10 km) |
| Gundelfingen to Ihtiman | 865.03 mi (1,392.14 km) |
| Gundelfingen to Isperih | 957.15 mi (1,540.38 km) |
| Gundelfingen to Kardzhali | 961.36 mi (1,547.16 km) |
