| Bargoed to Smyrna (Delaware) | 3,457.48 mi (5,564.27 km) |
| Bargoed to Smyrna (Georgia) | 4,075.31 mi (6,558.58 km) |
| Bargoed to Smyrna (Tennessee) | 4,055.75 mi (6,527.11 km) |
| Bargoed to Snellville (Georgia) | 4,054.59 mi (6,525.23 km) |
| Bargoed to Snoqualmie (Washington) | 4,682.08 mi (7,535.08 km) |
| Bargoed to Snyder (Texas) | 4,784.11 mi (7,699.28 km) |
| Bargoed to Socastee (South Carolina) | 3,855.66 mi (6,205.09 km) |
| Bargoed to Socorro (Texas) | 5,042.47 mi (8,115.07 km) |
| Bargoed to Soddy-Daisy (Tennessee) | 4,035.10 mi (6,493.86 km) |
| Bargoed to Solana Beach (California) | 5,357.84 mi (8,622.61 km) |
| Bargoed to Soledad (California) | 5,294.76 mi (8,521.09 km) |
| Bargoed to Solon (Ohio) | 3,601.78 mi (5,796.50 km) |
| Bargoed to Somers Point (New Jersey) | 3,415.11 mi (5,496.09 km) |
| Bargoed to Somerset (Kentucky) | 3,925.57 mi (6,317.60 km) |
| Bargoed to Somerset (New Jersey) | 3,359.02 mi (5,405.82 km) |
