| Southborough to Point Pleasant (New Jersey) | 3,514.99 mi (5,656.83 km) |
| Southborough to Pomona (California) | 5,453.30 mi (8,776.24 km) |
| Southborough to Pompano Beach (Florida) | 4,422.49 mi (7,117.31 km) |
| Southborough to Pompton Lakes (New Jersey) | 3,483.94 mi (5,606.86 km) |
| Southborough to Pompton Plains (New Jersey) | 3,486.31 mi (5,610.67 km) |
| Southborough to Ponca City (Oklahoma) | 4,582.45 mi (7,374.74 km) |
| Southborough to Ponce (Puerto Rico) | 4,259.04 mi (6,854.26 km) |
| Southborough to Pontiac (Illinois) | 4,058.56 mi (6,531.62 km) |
| Southborough to Pontiac (Michigan) | 3,771.41 mi (6,069.50 km) |
| Southborough to Pooler (Georgia) | 4,180.82 mi (6,728.38 km) |
| Southborough to Poplar Bluff (Missouri) | 4,325.12 mi (6,960.61 km) |
| Southborough to Poquoson (Virginia) | 3,740.41 mi (6,019.61 km) |
| Southborough to Port Angeles (Washington) | 4,813.77 mi (7,747.02 km) |
| Southborough to Port Arthur (Texas) | 4,811.35 mi (7,743.13 km) |
| Southborough to Port Charlotte (Florida) | 4,469.17 mi (7,192.44 km) |
