| Williamsport to Secaucus (New Jersey) | 158.11 mi (254.45 km) |
| Williamsport to Security-Widefield (Colorado) | 1,468.83 mi (2,363.86 km) |
| Williamsport to Sedalia (Missouri) | 873.94 mi (1,406.47 km) |
| Williamsport to Sedro-Woolley (Washington) | 2,234.75 mi (3,596.49 km) |
| Williamsport to Seguin (Texas) | 1,421.19 mi (2,287.19 km) |
| Williamsport to Selden (New York) | 209.44 mi (337.06 km) |
| Williamsport to Selma (Alabama) | 821.83 mi (1,322.60 km) |
| Williamsport to Selma (California) | 2,288.78 mi (3,683.43 km) |
| Williamsport to Selma (Texas) | 1,437.22 mi (2,312.98 km) |
| Williamsport to Seminole (Florida) | 981.07 mi (1,578.89 km) |
| Williamsport to Seven Hills (Ohio) | 240.80 mi (387.53 km) |
| Williamsport to Seven Oaks (South Carolina) | 545.20 mi (877.41 km) |
| Williamsport to Severn (Maryland) | 146.51 mi (235.79 km) |
| Williamsport to Severna Park (Maryland) | 150.79 mi (242.68 km) |
| Williamsport to Sevierville (Tennessee) | 510.83 mi (822.11 km) |
