| Cwmbran to Smyrna (Delaware) | 3,467.20 mi (5,579.93 km) |
| Cwmbran to Smyrna (Georgia) | 4,085.03 mi (6,574.23 km) |
| Cwmbran to Smyrna (Tennessee) | 4,065.45 mi (6,542.71 km) |
| Cwmbran to Snellville (Georgia) | 4,064.31 mi (6,540.88 km) |
| Cwmbran to Snoqualmie (Washington) | 4,690.05 mi (7,547.90 km) |
| Cwmbran to Snyder (Texas) | 4,793.63 mi (7,714.60 km) |
| Cwmbran to Socastee (South Carolina) | 3,865.38 mi (6,220.73 km) |
| Cwmbran to Socorro (Texas) | 5,051.88 mi (8,130.21 km) |
| Cwmbran to Soddy-Daisy (Tennessee) | 4,044.81 mi (6,509.49 km) |
| Cwmbran to Solana Beach (California) | 5,366.78 mi (8,637.00 km) |
| Cwmbran to Soledad (California) | 5,303.35 mi (8,534.91 km) |
| Cwmbran to Solon (Ohio) | 3,611.44 mi (5,812.06 km) |
| Cwmbran to Somers Point (New Jersey) | 3,424.84 mi (5,511.75 km) |
| Cwmbran to Somerset (Kentucky) | 3,935.27 mi (6,333.20 km) |
| Cwmbran to Somerset (New Jersey) | 3,368.75 mi (5,421.47 km) |
