| Sulphur to Smithville (Missouri) | 636.86 mi (1,024.93 km) |
| Sulphur to Smyrna (Delaware) | 1,182.95 mi (1,903.78 km) |
| Sulphur to Smyrna (Georgia) | 575.10 mi (925.53 km) |
| Sulphur to Smyrna (Tennessee) | 559.68 mi (900.71 km) |
| Sulphur to Snellville (Georgia) | 602.05 mi (968.91 km) |
| Sulphur to Snoqualmie (Washington) | 1,924.59 mi (3,097.32 km) |
| Sulphur to Snyder (Texas) | 477.02 mi (767.69 km) |
| Sulphur to Socastee (South Carolina) | 873.52 mi (1,405.80 km) |
| Sulphur to Socorro (Texas) | 770.45 mi (1,239.92 km) |
| Sulphur to Soddy-Daisy (Tennessee) | 588.56 mi (947.20 km) |
| Sulphur to Solana Beach (California) | 1,416.18 mi (2,279.12 km) |
| Sulphur to Soledad (California) | 1,665.05 mi (2,679.63 km) |
| Sulphur to Solon (Ohio) | 1,017.86 mi (1,638.09 km) |
| Sulphur to Somers Point (New Jersey) | 1,231.90 mi (1,982.55 km) |
| Sulphur to Somerset (Kentucky) | 690.26 mi (1,110.86 km) |
