| Cwmbran to Security-Widefield (Colorado) | 4,620.29 mi (7,435.64 km) |
| Cwmbran to Sedalia (Missouri) | 4,197.42 mi (6,755.10 km) |
| Cwmbran to Sedro-Woolley (Washington) | 4,645.73 mi (7,476.57 km) |
| Cwmbran to Seguin (Texas) | 4,841.96 mi (7,792.37 km) |
| Cwmbran to Selden (New York) | 3,293.36 mi (5,300.16 km) |
| Cwmbran to Selma (Alabama) | 4,258.71 mi (6,853.73 km) |
| Cwmbran to Selma (California) | 5,241.66 mi (8,435.63 km) |
| Cwmbran to Selma (Texas) | 4,855.73 mi (7,814.54 km) |
| Cwmbran to Seminole (Florida) | 4,309.19 mi (6,934.98 km) |
| Cwmbran to Seven Hills (Ohio) | 3,621.02 mi (5,827.47 km) |
| Cwmbran to Seven Oaks (South Carolina) | 3,937.08 mi (6,336.12 km) |
| Cwmbran to Severn (Maryland) | 3,518.93 mi (5,663.18 km) |
| Cwmbran to Severna Park (Maryland) | 3,515.87 mi (5,658.24 km) |
| Cwmbran to Sevierville (Tennessee) | 3,949.41 mi (6,355.96 km) |
| Cwmbran to Seymour (Indiana) | 3,899.26 mi (6,275.25 km) |
