| Kreuzlingen to Smolyan | 868.70 mi (1,398.04 km) |
| Kreuzlingen to Sofia | 767.99 mi (1,235.96 km) |
| Kreuzlingen to Sopot | 831.91 mi (1,338.83 km) |
| Kreuzlingen to Sozopol | 971.19 mi (1,562.99 km) |
| Kreuzlingen to Sredets | 950.95 mi (1,530.40 km) |
| Kreuzlingen to Stamboliyski | 840.78 mi (1,353.11 km) |
| Kreuzlingen to Stara Zagora | 879.11 mi (1,414.79 km) |
| Kreuzlingen to Svilengrad | 926.89 mi (1,491.68 km) |
| Kreuzlingen to Svishtov | 827.89 mi (1,332.36 km) |
| Kreuzlingen to Targovishte | 894.65 mi (1,439.79 km) |
| Kreuzlingen to Teteven | 801.50 mi (1,289.90 km) |
| Kreuzlingen to Troyan | 822.54 mi (1,323.75 km) |
| Kreuzlingen to Tryavna | 857.93 mi (1,380.70 km) |
| Kreuzlingen to Tutrakan | 873.50 mi (1,405.76 km) |
| Kreuzlingen to Varna | 956.24 mi (1,538.93 km) |
