| Williamsport to Smithville (Missouri) | 931.09 mi (1,498.44 km) |
| Williamsport to Smyrna (Delaware) | 154.13 mi (248.06 km) |
| Williamsport to Smyrna (Georgia) | 653.38 mi (1,051.52 km) |
| Williamsport to Smyrna (Tennessee) | 628.01 mi (1,010.69 km) |
| Williamsport to Snellville (Georgia) | 636.63 mi (1,024.55 km) |
| Williamsport to Snoqualmie (Washington) | 2,222.56 mi (3,576.86 km) |
| Williamsport to Snyder (Texas) | 1,437.31 mi (2,313.13 km) |
| Williamsport to Socastee (South Carolina) | 532.89 mi (857.60 km) |
| Williamsport to Socorro (Texas) | 1,744.09 mi (2,806.85 km) |
| Williamsport to Soddy-Daisy (Tennessee) | 604.30 mi (972.53 km) |
| Williamsport to Solana Beach (California) | 2,266.40 mi (3,647.42 km) |
| Williamsport to Soledad (California) | 2,381.27 mi (3,832.28 km) |
| Williamsport to Solon (Ohio) | 228.70 mi (368.06 km) |
| Williamsport to Somers Point (New Jersey) | 184.56 mi (297.03 km) |
| Williamsport to Somerset (Kentucky) | 496.79 mi (799.51 km) |
