| Gelnhausen to Devnya | 992.56 mi (1,597.37 km) |
| Gelnhausen to Dimitrovgrad | 964.23 mi (1,551.78 km) |
| Gelnhausen to Dobrich | 989.76 mi (1,592.86 km) |
| Gelnhausen to Dospat | 929.04 mi (1,495.15 km) |
| Gelnhausen to Dupnitsa | 860.84 mi (1,385.38 km) |
| Gelnhausen to Elhovo | 996.64 mi (1,603.94 km) |
| Gelnhausen to Etropole | 867.20 mi (1,395.62 km) |
| Gelnhausen to Gabrovo | 917.41 mi (1,476.42 km) |
| Gelnhausen to Gorna Oryahovitsa | 920.47 mi (1,481.35 km) |
| Gelnhausen to Gotse Delchev | 917.29 mi (1,476.23 km) |
| Gelnhausen to Harmanli | 981.13 mi (1,578.97 km) |
| Gelnhausen to Haskovo | 968.30 mi (1,558.32 km) |
| Gelnhausen to Ihtiman | 878.50 mi (1,413.81 km) |
| Gelnhausen to Isperih | 942.62 mi (1,517.00 km) |
| Gelnhausen to Kardzhali | 973.84 mi (1,567.25 km) |
