| Southborough to Romeoville (Illinois) | 4,003.16 mi (6,442.47 km) |
| Southborough to Romulus (Michigan) | 3,793.45 mi (6,104.97 km) |
| Southborough to Ronkonkoma (New York) | 3,444.82 mi (5,543.91 km) |
| Southborough to Roosevelt (New York) | 3,469.00 mi (5,582.81 km) |
| Southborough to Rosamond (California) | 5,421.75 mi (8,725.46 km) |
| Southborough to Rosaryville (Maryland) | 3,686.02 mi (5,932.07 km) |
| Southborough to Roscoe (Illinois) | 4,000.78 mi (6,438.64 km) |
| Southborough to Rose Hill (Virginia) | 3,696.69 mi (5,949.24 km) |
| Southborough to Roseburg (Oregon) | 5,093.25 mi (8,196.79 km) |
| Southborough to Rosedale (California) | 5,423.15 mi (8,727.72 km) |
| Southborough to Rosedale (Maryland) | 3,648.04 mi (5,870.95 km) |
| Southborough to Roselle (Illinois) | 3,986.44 mi (6,415.55 km) |
| Southborough to Roselle (New Jersey) | 3,497.91 mi (5,629.33 km) |
| Southborough to Roselle Park (New Jersey) | 3,497.64 mi (5,628.90 km) |
| Southborough to Rosemead (California) | 5,463.01 mi (8,791.87 km) |
