| Middlesex to South Plainfield (New Jersey) | 4.51 mi (7.26 km) |
| Middlesex to South Portland (Maine) | 301.94 mi (485.92 km) |
| Middlesex to South Riding (Virginia) | 196.96 mi (316.97 km) |
| Middlesex to South River (New Jersey) | 11.00 mi (17.70 km) |
| Middlesex to South Salt Lake (Utah) | 1,945.64 mi (3,131.20 km) |
| Middlesex to South San Francisco (California) | 2,545.05 mi (4,095.86 km) |
| Middlesex to South San Jose Hills (California) | 2,403.60 mi (3,868.21 km) |
| Middlesex to South Sioux City (Nebraska) | 1,137.82 mi (1,831.14 km) |
| Middlesex to South St. Paul (Minnesota) | 984.45 mi (1,584.32 km) |
| Middlesex to South Valley (New Mexico) | 1,788.13 mi (2,877.72 km) |
| Middlesex to South Venice (Florida) | 1,038.27 mi (1,670.93 km) |
| Middlesex to South Whittier (California) | 2,412.45 mi (3,882.46 km) |
| Middlesex to South Yarmouth (Massachusetts) | 236.25 mi (380.20 km) |
| Middlesex to Southaven (Mississippi) | 928.66 mi (1,494.54 km) |
| Middlesex to Southchase (Florida) | 928.70 mi (1,494.59 km) |
