| Zarautz to Smolyan | 1,369.17 mi (2,203.46 km) |
| Zarautz to Sofia | 1,284.19 mi (2,066.70 km) |
| Zarautz to Sopot | 1,355.69 mi (2,181.77 km) |
| Zarautz to Sozopol | 1,506.01 mi (2,423.68 km) |
| Zarautz to Sredets | 1,482.09 mi (2,385.20 km) |
| Zarautz to Stamboliyski | 1,352.14 mi (2,176.05 km) |
| Zarautz to Stara Zagora | 1,403.57 mi (2,258.83 km) |
| Zarautz to Svilengrad | 1,441.29 mi (2,319.54 km) |
| Zarautz to Svishtov | 1,374.08 mi (2,211.37 km) |
| Zarautz to Targovishte | 1,439.25 mi (2,316.25 km) |
| Zarautz to Teteven | 1,328.20 mi (2,137.54 km) |
| Zarautz to Troyan | 1,351.02 mi (2,174.26 km) |
| Zarautz to Tryavna | 1,390.22 mi (2,237.35 km) |
| Zarautz to Tutrakan | 1,432.24 mi (2,304.96 km) |
| Zarautz to Varna | 1,505.70 mi (2,423.19 km) |
