| Smethwick to Sinop | 1,859.29 mi (2,992.25 km) |
| Smethwick to Siran | 2,101.05 mi (3,381.31 km) |
| Smethwick to Sirnak | 2,356.50 mi (3,792.43 km) |
| Smethwick to Sirvan | 2,314.27 mi (3,724.45 km) |
| Smethwick to Sivas | 2,032.07 mi (3,270.31 km) |
| Smethwick to Sivasli | 1,791.31 mi (2,882.83 km) |
| Smethwick to Siverek | 2,215.73 mi (3,565.87 km) |
| Smethwick to Sivrice | 2,184.32 mi (3,515.32 km) |
| Smethwick to Sivrihisar | 1,820.84 mi (2,930.36 km) |
| Smethwick to Sogut | 1,740.55 mi (2,801.15 km) |
| Smethwick to Sogutlu | 1,713.92 mi (2,758.29 km) |
| Smethwick to Soke | 1,737.98 mi (2,797.01 km) |
| Smethwick to Solhan | 2,233.87 mi (3,595.07 km) |
| Smethwick to Soma | 1,676.45 mi (2,697.99 km) |
| Smethwick to Sorgun | 1,953.81 mi (3,144.35 km) |
