| Southborough to Sumter (South Carolina) | 4,056.67 mi (6,528.58 km) |
| Southborough to Sun City (Arizona) | 5,295.74 mi (8,522.67 km) |
| Southborough to Sun City Center (Florida) | 4,443.22 mi (7,150.68 km) |
| Southborough to Sun City West (Arizona) | 5,295.38 mi (8,522.09 km) |
| Southborough to Sun Lakes (Arizona) | 5,303.72 mi (8,535.51 km) |
| Southborough to Sun Prairie (Wisconsin) | 3,974.28 mi (6,395.98 km) |
| Southborough to Sun Valley (Nevada) | 5,198.82 mi (8,366.70 km) |
| Southborough to Sun Village (California) | 5,430.93 mi (8,740.23 km) |
| Southborough to Sunland Park (New Mexico) | 5,193.09 mi (8,357.48 km) |
| Southborough to Sunny Isles Beach (Florida) | 4,437.48 mi (7,141.43 km) |
| Southborough to Sunnyside (Washington) | 4,824.34 mi (7,764.03 km) |
| Southborough to Sunnyvale (California) | 5,394.21 mi (8,681.14 km) |
| Southborough to Sunrise (Florida) | 4,434.09 mi (7,135.98 km) |
| Southborough to Sunrise Manor (Nevada) | 5,245.33 mi (8,441.55 km) |
| Southborough to Sunset (Florida) | 4,458.91 mi (7,175.92 km) |
