| Barbastro to Siran | 2,016.60 mi (3,245.40 km) |
| Barbastro to Sirnak | 2,246.28 mi (3,615.03 km) |
| Barbastro to Sirvan | 2,210.81 mi (3,557.96 km) |
| Barbastro to Sivas | 1,918.30 mi (3,087.20 km) |
| Barbastro to Sivasli | 1,569.64 mi (2,526.09 km) |
| Barbastro to Siverek | 2,080.12 mi (3,347.63 km) |
| Barbastro to Sivrice | 2,063.32 mi (3,320.60 km) |
| Barbastro to Sivrihisar | 1,644.70 mi (2,646.89 km) |
| Barbastro to Sogut | 1,564.68 mi (2,518.12 km) |
| Barbastro to Sogutlu | 1,565.38 mi (2,519.24 km) |
| Barbastro to Soke | 1,469.74 mi (2,365.32 km) |
| Barbastro to Solhan | 2,140.09 mi (3,444.15 km) |
| Barbastro to Soma | 1,448.51 mi (2,331.15 km) |
| Barbastro to Sorgun | 1,824.09 mi (2,935.59 km) |
| Barbastro to Suhut | 1,612.85 mi (2,595.63 km) |
