| Pontypridd to Smyrna (Delaware) | 3,454.93 mi (5,560.17 km) |
| Pontypridd to Smyrna (Georgia) | 4,072.87 mi (6,554.65 km) |
| Pontypridd to Smyrna (Tennessee) | 4,053.70 mi (6,523.80 km) |
| Pontypridd to Snellville (Georgia) | 4,052.11 mi (6,521.24 km) |
| Pontypridd to Snoqualmie (Washington) | 4,683.95 mi (7,538.08 km) |
| Pontypridd to Snyder (Texas) | 4,782.96 mi (7,697.43 km) |
| Pontypridd to Socastee (South Carolina) | 3,852.74 mi (6,200.39 km) |
| Pontypridd to Socorro (Texas) | 5,041.70 mi (8,113.83 km) |
| Pontypridd to Soddy-Daisy (Tennessee) | 4,032.86 mi (6,490.26 km) |
| Pontypridd to Solana Beach (California) | 5,358.17 mi (8,623.15 km) |
| Pontypridd to Soledad (California) | 5,295.72 mi (8,522.64 km) |
| Pontypridd to Solon (Ohio) | 3,599.94 mi (5,793.54 km) |
| Pontypridd to Somers Point (New Jersey) | 3,412.48 mi (5,491.86 km) |
| Pontypridd to Somerset (Kentucky) | 3,923.48 mi (6,314.23 km) |
| Pontypridd to Somerset (New Jersey) | 3,356.54 mi (5,401.82 km) |
