| Pottstown to Sinop | 5,294.43 mi (8,520.56 km) |
| Pottstown to Siran | 5,531.39 mi (8,901.92 km) |
| Pottstown to Sirnak | 5,788.57 mi (9,315.80 km) |
| Pottstown to Sirvan | 5,745.01 mi (9,245.70 km) |
| Pottstown to Sivas | 5,473.40 mi (8,808.58 km) |
| Pottstown to Sivasli | 5,241.99 mi (8,436.17 km) |
| Pottstown to Siverek | 5,658.72 mi (9,106.83 km) |
| Pottstown to Sivrice | 5,624.12 mi (9,051.15 km) |
| Pottstown to Sivrihisar | 5,273.37 mi (8,486.67 km) |
| Pottstown to Sogut | 5,193.20 mi (8,357.65 km) |
| Pottstown to Sogutlu | 5,165.66 mi (8,313.33 km) |
| Pottstown to Soke | 5,180.15 mi (8,336.65 km) |
| Pottstown to Solhan | 5,663.40 mi (9,114.36 km) |
| Pottstown to Soma | 5,125.18 mi (8,248.18 km) |
| Pottstown to Sorgun | 5,400.22 mi (8,690.81 km) |
