| Darmstadt to Smolyan | 959.53 mi (1,544.21 km) |
| Darmstadt to Sofia | 855.88 mi (1,377.41 km) |
| Darmstadt to Sopot | 913.73 mi (1,470.51 km) |
| Darmstadt to Sozopol | 1,042.96 mi (1,678.48 km) |
| Darmstadt to Sredets | 1,025.18 mi (1,649.86 km) |
| Darmstadt to Stamboliyski | 927.98 mi (1,493.44 km) |
| Darmstadt to Stara Zagora | 958.93 mi (1,543.25 km) |
| Darmstadt to Svilengrad | 1,009.81 mi (1,625.13 km) |
| Darmstadt to Svishtov | 898.17 mi (1,445.46 km) |
| Darmstadt to Targovishte | 963.49 mi (1,550.60 km) |
| Darmstadt to Teteven | 883.08 mi (1,421.18 km) |
| Darmstadt to Troyan | 902.42 mi (1,452.31 km) |
| Darmstadt to Tryavna | 934.60 mi (1,504.10 km) |
| Darmstadt to Tutrakan | 934.62 mi (1,504.13 km) |
| Darmstadt to Varna | 1,020.42 mi (1,642.21 km) |
