| Southborough to Oxford (Alabama) | 4,298.35 mi (6,917.52 km) |
| Southborough to Oxford (Mississippi) | 4,408.39 mi (7,094.62 km) |
| Southborough to Oxford (Ohio) | 3,971.48 mi (6,391.48 km) |
| Southborough to Oxnard (California) | 5,490.84 mi (8,836.65 km) |
| Southborough to Oxon Hill (Maryland) | 3,691.06 mi (5,940.19 km) |
| Southborough to Ozark (Alabama) | 4,394.76 mi (7,072.68 km) |
| Southborough to Ozark (Missouri) | 4,420.29 mi (7,113.77 km) |
| Southborough to Pace (Florida) | 4,498.59 mi (7,239.79 km) |
| Southborough to Pacific Grove (California) | 5,435.65 mi (8,747.84 km) |
| Southborough to Pacifica (California) | 5,394.38 mi (8,681.42 km) |
| Southborough to Paducah (Kentucky) | 4,240.71 mi (6,824.77 km) |
| Southborough to Pahrump (Nevada) | 5,273.56 mi (8,486.97 km) |
| Southborough to Painesville (Ohio) | 3,732.80 mi (6,007.36 km) |
| Southborough to Palatine (Illinois) | 3,978.45 mi (6,402.69 km) |
| Southborough to Palatka (Florida) | 4,318.22 mi (6,949.51 km) |
