| Ladenburg to Smolyan | 947.02 mi (1,524.08 km) |
| Ladenburg to Sofia | 843.75 mi (1,357.88 km) |
| Ladenburg to Sopot | 902.84 mi (1,452.98 km) |
| Ladenburg to Sozopol | 1,034.16 mi (1,664.31 km) |
| Ladenburg to Sredets | 1,015.89 mi (1,634.91 km) |
| Ladenburg to Stamboliyski | 916.11 mi (1,474.34 km) |
| Ladenburg to Stara Zagora | 948.49 mi (1,526.45 km) |
| Ladenburg to Svilengrad | 998.87 mi (1,607.53 km) |
| Ladenburg to Svishtov | 889.39 mi (1,431.34 km) |
| Ladenburg to Targovishte | 955.11 mi (1,537.09 km) |
| Ladenburg to Teteven | 872.18 mi (1,403.64 km) |
| Ladenburg to Troyan | 891.87 mi (1,435.33 km) |
| Ladenburg to Tryavna | 924.71 mi (1,488.18 km) |
| Ladenburg to Tutrakan | 927.60 mi (1,492.83 km) |
| Ladenburg to Varna | 1,012.99 mi (1,630.25 km) |
