| Southborough to Roy (Utah) | 4,872.28 mi (7,841.18 km) |
| Southborough to Royal Kunia (Hawaii) | 7,252.39 mi (11,671.59 km) |
| Southborough to Royal Oak (Michigan) | 3,772.48 mi (6,071.21 km) |
| Southborough to Royal Palm Beach (Florida) | 4,403.36 mi (7,086.52 km) |
| Southborough to Royse City (Texas) | 4,745.08 mi (7,636.47 km) |
| Southborough to Ruskin (Florida) | 4,446.35 mi (7,155.71 km) |
| Southborough to Russellville (Alabama) | 4,329.12 mi (6,967.05 km) |
| Southborough to Russellville (Arkansas) | 4,504.97 mi (7,250.05 km) |
| Southborough to Ruston (Louisiana) | 4,623.31 mi (7,440.49 km) |
| Southborough to Rutherford (New Jersey) | 3,484.38 mi (5,607.57 km) |
| Southborough to Rutland (Vermont) | 3,321.69 mi (5,345.74 km) |
| Southborough to Sabana Grande (Puerto Rico) | 4,270.15 mi (6,872.14 km) |
| Southborough to Sachse (Texas) | 4,755.41 mi (7,653.09 km) |
| Southborough to Saco (Maine) | 3,222.43 mi (5,185.99 km) |
| Southborough to Sacramento (California) | 5,309.08 mi (8,544.13 km) |
