| Pontypridd to Security-Widefield (Colorado) | 4,610.80 mi (7,420.37 km) |
| Pontypridd to Sedalia (Missouri) | 4,186.67 mi (6,737.79 km) |
| Pontypridd to Sedro-Woolley (Washington) | 4,639.82 mi (7,467.07 km) |
| Pontypridd to Seguin (Texas) | 4,830.62 mi (7,774.13 km) |
| Pontypridd to Selden (New York) | 3,281.09 mi (5,280.40 km) |
| Pontypridd to Selma (Alabama) | 4,246.61 mi (6,834.27 km) |
| Pontypridd to Selma (California) | 5,233.81 mi (8,423.00 km) |
| Pontypridd to Selma (Texas) | 4,844.43 mi (7,796.35 km) |
| Pontypridd to Seminole (Florida) | 4,296.32 mi (6,914.26 km) |
| Pontypridd to Seven Hills (Ohio) | 3,609.53 mi (5,808.98 km) |
| Pontypridd to Seven Oaks (South Carolina) | 3,924.66 mi (6,316.12 km) |
| Pontypridd to Severn (Maryland) | 3,506.72 mi (5,643.53 km) |
| Pontypridd to Severna Park (Maryland) | 3,503.64 mi (5,638.57 km) |
| Pontypridd to Sevierville (Tennessee) | 3,937.39 mi (6,336.62 km) |
| Pontypridd to Seymour (Indiana) | 3,887.82 mi (6,256.85 km) |
