| South Plainfield to Somerset (New Jersey) | 6.43 mi (10.36 km) |
| South Plainfield to Somersworth (New Hampshire) | 259.15 mi (417.07 km) |
| South Plainfield to Somerton (Arizona) | 2,280.74 mi (3,670.49 km) |
| South Plainfield to Somerville (Massachusetts) | 212.49 mi (341.97 km) |
| South Plainfield to Somerville (New Jersey) | 10.19 mi (16.40 km) |
| South Plainfield to Sonoma (California) | 2,536.83 mi (4,082.64 km) |
| South Plainfield to Soquel (California) | 2,540.87 mi (4,089.14 km) |
| South Plainfield to South Bend (Indiana) | 621.15 mi (999.64 km) |
| South Plainfield to South Bradenton (Florida) | 1,018.49 mi (1,639.10 km) |
| South Plainfield to South Burlington (Vermont) | 275.39 mi (443.20 km) |
| South Plainfield to South Charleston (West Virginia) | 418.70 mi (673.83 km) |
| South Plainfield to South Daytona (Florida) | 871.66 mi (1,402.80 km) |
| South Plainfield to South El Monte (California) | 2,414.61 mi (3,885.94 km) |
| South Plainfield to South Elgin (Illinois) | 727.39 mi (1,170.62 km) |
| South Plainfield to South Euclid (Ohio) | 376.09 mi (605.25 km) |
