| Sundsvall to Siran | 1,781.25 mi (2,866.65 km) |
| Sundsvall to Sirnak | 2,021.95 mi (3,254.01 km) |
| Sundsvall to Sirvan | 1,978.10 mi (3,183.44 km) |
| Sundsvall to Sivas | 1,767.01 mi (2,843.73 km) |
| Sundsvall to Sivasli | 1,732.82 mi (2,788.71 km) |
| Sundsvall to Siverek | 1,940.92 mi (3,123.61 km) |
| Sundsvall to Sivrice | 1,896.15 mi (3,051.56 km) |
| Sundsvall to Sivrihisar | 1,693.54 mi (2,725.49 km) |
| Sundsvall to Sogut | 1,636.52 mi (2,633.72 km) |
| Sundsvall to Sogutlu | 1,581.97 mi (2,545.93 km) |
| Sundsvall to Soke | 1,756.14 mi (2,826.23 km) |
| Sundsvall to Solhan | 1,899.64 mi (3,057.17 km) |
| Sundsvall to Soma | 1,660.85 mi (2,672.88 km) |
| Sundsvall to Sorgun | 1,728.99 mi (2,782.54 km) |
| Sundsvall to Suhut | 1,740.88 mi (2,801.68 km) |
