| Frankenthal to Smolyan | 959.72 mi (1,544.52 km) |
| Frankenthal to Sofia | 856.48 mi (1,378.37 km) |
| Frankenthal to Sopot | 915.63 mi (1,473.56 km) |
| Frankenthal to Sozopol | 1,046.98 mi (1,684.95 km) |
| Frankenthal to Sredets | 1,028.71 mi (1,655.55 km) |
| Frankenthal to Stamboliyski | 928.85 mi (1,494.84 km) |
| Frankenthal to Stara Zagora | 961.29 mi (1,547.05 km) |
| Frankenthal to Svilengrad | 1,011.65 mi (1,628.10 km) |
| Frankenthal to Svishtov | 902.21 mi (1,451.97 km) |
| Frankenthal to Targovishte | 967.92 mi (1,557.72 km) |
| Frankenthal to Teteven | 884.97 mi (1,424.22 km) |
| Frankenthal to Troyan | 904.67 mi (1,455.93 km) |
| Frankenthal to Tryavna | 937.52 mi (1,508.80 km) |
| Frankenthal to Tutrakan | 940.39 mi (1,513.41 km) |
| Frankenthal to Varna | 1,025.79 mi (1,650.85 km) |
