| Southborough to Oak Harbor (Washington) | 4,782.12 mi (7,696.07 km) |
| Southborough to Oak Hills (Oregon) | 4,945.56 mi (7,959.11 km) |
| Southborough to Oak Lawn (Illinois) | 3,986.09 mi (6,414.99 km) |
| Southborough to Oak Park (California) | 5,478.30 mi (8,816.47 km) |
| Southborough to Oak Park (Illinois) | 3,979.48 mi (6,404.35 km) |
| Southborough to Oak Park (Michigan) | 3,775.52 mi (6,076.12 km) |
| Southborough to Oak Ridge (Florida) | 4,365.78 mi (7,026.04 km) |
| Southborough to Oak Ridge (New Jersey) | 3,491.29 mi (5,618.69 km) |
| Southborough to Oak Ridge (Tennessee) | 4,120.14 mi (6,630.72 km) |
| Southborough to Oakdale (California) | 5,337.06 mi (8,589.17 km) |
| Southborough to Oakdale (Minnesota) | 4,027.27 mi (6,481.27 km) |
| Southborough to Oakland (California) | 5,376.25 mi (8,652.23 km) |
| Southborough to Oakland (New Jersey) | 3,480.86 mi (5,601.90 km) |
| Southborough to Oakland Park (Florida) | 4,426.66 mi (7,124.02 km) |
| Southborough to Oakleaf Plantation (Florida) | 4,299.47 mi (6,919.33 km) |
