| Pontypridd to Sinop | 1,910.42 mi (3,074.52 km) |
| Pontypridd to Siran | 2,152.80 mi (3,464.59 km) |
| Pontypridd to Sirnak | 2,407.18 mi (3,873.98 km) |
| Pontypridd to Sirvan | 2,365.37 mi (3,806.70 km) |
| Pontypridd to Sivas | 2,080.68 mi (3,348.53 km) |
| Pontypridd to Sivasli | 1,827.32 mi (2,940.79 km) |
| Pontypridd to Siverek | 2,263.31 mi (3,642.44 km) |
| Pontypridd to Sivrice | 2,233.12 mi (3,593.86 km) |
| Pontypridd to Sivrihisar | 1,861.81 mi (2,996.30 km) |
| Pontypridd to Sogut | 1,780.87 mi (2,866.03 km) |
| Pontypridd to Sogutlu | 1,756.75 mi (2,827.22 km) |
| Pontypridd to Soke | 1,768.50 mi (2,846.13 km) |
| Pontypridd to Solhan | 2,285.48 mi (3,678.12 km) |
| Pontypridd to Soma | 1,710.74 mi (2,753.16 km) |
| Pontypridd to Sorgun | 2,000.38 mi (3,219.29 km) |
