| Sintra to Siran | 2,555.84 mi (4,113.23 km) |
| Sintra to Sirnak | 2,779.51 mi (4,473.20 km) |
| Sintra to Sirvan | 2,745.50 mi (4,418.46 km) |
| Sintra to Sivas | 2,454.65 mi (3,950.37 km) |
| Sintra to Sivasli | 2,092.32 mi (3,367.26 km) |
| Sintra to Siverek | 2,610.93 mi (4,201.89 km) |
| Sintra to Sivrice | 2,596.84 mi (4,179.20 km) |
| Sintra to Sivrihisar | 2,175.00 mi (3,500.33 km) |
| Sintra to Sogut | 2,096.59 mi (3,374.13 km) |
| Sintra to Sogutlu | 2,101.65 mi (3,382.28 km) |
| Sintra to Soke | 1,983.78 mi (3,192.58 km) |
| Sintra to Solhan | 2,676.92 mi (4,308.08 km) |
| Sintra to Soma | 1,972.95 mi (3,175.15 km) |
| Sintra to Sorgun | 2,359.27 mi (3,796.87 km) |
| Sintra to Suhut | 2,136.98 mi (3,439.13 km) |
