| Peterborough to Ridgeland (Mississippi) | 4,473.89 mi (7,200.04 km) |
| Peterborough to Ridgewood (New Jersey) | 3,426.63 mi (5,514.63 km) |
| Peterborough to Rifle (Colorado) | 4,742.59 mi (7,632.47 km) |
| Peterborough to Rincon (Georgia) | 4,124.38 mi (6,637.55 km) |
| Peterborough to Ringwood (New Jersey) | 3,427.60 mi (5,516.19 km) |
| Peterborough to Río Grande (Puerto Rico) | 4,197.33 mi (6,754.95 km) |
| Peterborough to Rio Grande City (Texas) | 5,129.77 mi (8,255.56 km) |
| Peterborough to Rio Linda (California) | 5,215.96 mi (8,394.28 km) |
| Peterborough to Rio Rancho (New Mexico) | 4,936.81 mi (7,945.03 km) |
| Peterborough to Rio Rico (Arizona) | 5,294.78 mi (8,521.13 km) |
| Peterborough to Ripon (California) | 5,262.03 mi (8,468.42 km) |
| Peterborough to River Edge (New Jersey) | 3,426.12 mi (5,513.81 km) |
| Peterborough to River Falls (Wisconsin) | 3,949.99 mi (6,356.89 km) |
| Peterborough to River Forest (Illinois) | 3,916.15 mi (6,302.43 km) |
| Peterborough to River Grove (Illinois) | 3,915.45 mi (6,301.30 km) |
