| Southborough to South Fulton (Georgia) | 4,244.26 mi (6,830.48 km) |
| Southborough to South Gate (California) | 5,473.66 mi (8,809.00 km) |
| Southborough to South Hill (Washington) | 4,840.21 mi (7,789.57 km) |
| Southborough to South Holland (Illinois) | 3,985.71 mi (6,414.38 km) |
| Southborough to South Houston (Texas) | 4,873.30 mi (7,842.81 km) |
| Southborough to South Huntington (New York) | 3,455.01 mi (5,560.31 km) |
| Southborough to South Jordan (Utah) | 4,903.51 mi (7,891.44 km) |
| Southborough to South Lake Tahoe (California) | 5,243.40 mi (8,438.44 km) |
| Southborough to South Laurel (Maryland) | 3,673.70 mi (5,912.25 km) |
| Southborough to South Lyon (Michigan) | 3,793.97 mi (6,105.80 km) |
| Southborough to South Miami (Florida) | 4,456.35 mi (7,171.80 km) |
| Southborough to South Miami Heights (Florida) | 4,466.24 mi (7,187.71 km) |
| Southborough to South Milwaukee (Wisconsin) | 3,935.02 mi (6,332.81 km) |
| Southborough to South Ogden (Utah) | 4,869.33 mi (7,836.43 km) |
| Southborough to South Pasadena (California) | 5,463.06 mi (8,791.94 km) |
