| Andoain to Smolyan | 1,361.99 mi (2,191.92 km) |
| Andoain to Sofia | 1,277.26 mi (2,055.56 km) |
| Andoain to Sopot | 1,348.81 mi (2,170.70 km) |
| Andoain to Sozopol | 1,499.18 mi (2,412.70 km) |
| Andoain to Sredets | 1,475.23 mi (2,374.15 km) |
| Andoain to Stamboliyski | 1,345.10 mi (2,164.73 km) |
| Andoain to Stara Zagora | 1,396.66 mi (2,247.71 km) |
| Andoain to Svilengrad | 1,434.24 mi (2,308.18 km) |
| Andoain to Svishtov | 1,367.50 mi (2,200.79 km) |
| Andoain to Targovishte | 1,432.61 mi (2,305.56 km) |
| Andoain to Teteven | 1,321.38 mi (2,126.55 km) |
| Andoain to Troyan | 1,344.21 mi (2,163.29 km) |
| Andoain to Tryavna | 1,383.43 mi (2,226.42 km) |
| Andoain to Tutrakan | 1,425.83 mi (2,294.65 km) |
| Andoain to Varna | 1,499.10 mi (2,412.56 km) |
