| Williamsport to Somerset (New Jersey) | 141.80 mi (228.21 km) |
| Williamsport to Somersworth (New Hampshire) | 343.90 mi (553.45 km) |
| Williamsport to Somerton (Arizona) | 2,145.85 mi (3,453.41 km) |
| Williamsport to Somerville (Massachusetts) | 315.75 mi (508.16 km) |
| Williamsport to Somerville (New Jersey) | 134.97 mi (217.21 km) |
| Williamsport to Sonoma (California) | 2,393.53 mi (3,852.02 km) |
| Williamsport to Soquel (California) | 2,398.41 mi (3,859.87 km) |
| Williamsport to South Bend (Indiana) | 478.80 mi (770.55 km) |
| Williamsport to South Bradenton (Florida) | 1,002.60 mi (1,613.53 km) |
| Williamsport to South Burlington (Vermont) | 294.80 mi (474.43 km) |
| Williamsport to South Charleston (West Virginia) | 318.92 mi (513.26 km) |
| Williamsport to South Daytona (Florida) | 863.54 mi (1,389.73 km) |
| Williamsport to South El Monte (California) | 2,276.02 mi (3,662.90 km) |
| Williamsport to South Elgin (Illinois) | 584.37 mi (940.46 km) |
| Williamsport to South Euclid (Ohio) | 233.44 mi (375.69 km) |
