| Giessen to Smolyan | 984.86 mi (1,584.97 km) |
| Giessen to Sofia | 880.78 mi (1,417.48 km) |
| Giessen to Sopot | 936.47 mi (1,507.11 km) |
| Giessen to Sozopol | 1,062.00 mi (1,709.13 km) |
| Giessen to Sredets | 1,045.07 mi (1,681.87 km) |
| Giessen to Stamboliyski | 952.32 mi (1,532.61 km) |
| Giessen to Stara Zagora | 980.84 mi (1,578.51 km) |
| Giessen to Svilengrad | 1,032.47 mi (1,661.61 km) |
| Giessen to Svishtov | 917.42 mi (1,476.45 km) |
| Giessen to Targovishte | 981.98 mi (1,580.34 km) |
| Giessen to Teteven | 905.90 mi (1,457.90 km) |
| Giessen to Troyan | 924.62 mi (1,488.03 km) |
| Giessen to Tryavna | 955.65 mi (1,537.97 km) |
| Giessen to Tutrakan | 950.85 mi (1,530.25 km) |
| Giessen to Varna | 1,037.19 mi (1,669.20 km) |
