| Southborough to Alum Rock (California) | 5,389.02 mi (8,672.80 km) |
| Southborough to Alvin (Texas) | 4,890.08 mi (7,869.83 km) |
| Southborough to Amarillo (Texas) | 4,838.44 mi (7,786.72 km) |
| Southborough to Amelia (Ohio) | 3,973.02 mi (6,393.96 km) |
| Southborough to American Canyon (California) | 5,354.87 mi (8,617.83 km) |
| Southborough to American Fork (Utah) | 4,907.34 mi (7,897.61 km) |
| Southborough to Americus (Georgia) | 4,305.47 mi (6,928.98 km) |
| Southborough to Ames (Iowa) | 4,191.78 mi (6,746.02 km) |
| Southborough to Amherst (Ohio) | 3,785.72 mi (6,092.52 km) |
| Southborough to Ammon (Idaho) | 4,744.44 mi (7,635.44 km) |
| Southborough to Amsterdam (New York) | 3,398.13 mi (5,468.77 km) |
| Southborough to Anacortes (Washington) | 4,771.09 mi (7,678.32 km) |
| Southborough to Anaheim (California) | 5,468.89 mi (8,801.33 km) |
| Southborough to Anchorage (Alaska) | 4,494.48 mi (7,233.17 km) |
| Southborough to Anderson (California) | 5,224.28 mi (8,407.67 km) |
