| Gummersbach to Smolyan | 1,042.07 mi (1,677.04 km) |
| Gummersbach to Sofia | 937.99 mi (1,509.55 km) |
| Gummersbach to Sopot | 993.57 mi (1,599.00 km) |
| Gummersbach to Sozopol | 1,118.60 mi (1,800.22 km) |
| Gummersbach to Sredets | 1,101.81 mi (1,773.19 km) |
| Gummersbach to Stamboliyski | 1,009.51 mi (1,624.65 km) |
| Gummersbach to Stara Zagora | 1,037.86 mi (1,670.27 km) |
| Gummersbach to Svilengrad | 1,089.56 mi (1,753.47 km) |
| Gummersbach to Svishtov | 974.09 mi (1,567.65 km) |
| Gummersbach to Targovishte | 1,038.49 mi (1,671.29 km) |
| Gummersbach to Teteven | 963.00 mi (1,549.81 km) |
| Gummersbach to Troyan | 981.67 mi (1,579.85 km) |
| Gummersbach to Tryavna | 1,012.57 mi (1,629.58 km) |
| Gummersbach to Tutrakan | 1,006.89 mi (1,620.44 km) |
| Gummersbach to Varna | 1,093.33 mi (1,759.54 km) |
