| Peterborough to Romeoville (Illinois) | 3,939.14 mi (6,339.44 km) |
| Peterborough to Romulus (Michigan) | 3,732.56 mi (6,006.97 km) |
| Peterborough to Ronkonkoma (New York) | 3,394.92 mi (5,463.60 km) |
| Peterborough to Roosevelt (New York) | 3,418.86 mi (5,502.12 km) |
| Peterborough to Rosamond (California) | 5,340.50 mi (8,594.70 km) |
| Peterborough to Rosaryville (Maryland) | 3,635.59 mi (5,850.92 km) |
| Peterborough to Roscoe (Illinois) | 3,935.14 mi (6,332.99 km) |
| Peterborough to Rose Hill (Virginia) | 3,645.96 mi (5,867.61 km) |
| Peterborough to Roseburg (Oregon) | 5,004.65 mi (8,054.21 km) |
| Peterborough to Rosedale (California) | 5,340.93 mi (8,595.39 km) |
| Peterborough to Rosedale (Maryland) | 3,597.13 mi (5,789.01 km) |
| Peterborough to Roselle (Illinois) | 3,922.03 mi (6,311.89 km) |
| Peterborough to Roselle (New Jersey) | 3,447.17 mi (5,547.68 km) |
| Peterborough to Roselle Park (New Jersey) | 3,446.88 mi (5,547.21 km) |
| Peterborough to Rosemead (California) | 5,382.31 mi (8,661.99 km) |
