| Rockville to Platteville (Wisconsin) | 738.40 mi (1,188.35 km) |
| Rockville to Plattsburgh (New York) | 431.78 mi (694.87 km) |
| Rockville to Pleasant Grove (Utah) | 1,828.29 mi (2,942.35 km) |
| Rockville to Pleasant Hill (California) | 2,404.54 mi (3,869.73 km) |
| Rockville to Pleasant Hill (Iowa) | 876.39 mi (1,410.41 km) |
| Rockville to Pleasant Prairie (Wisconsin) | 609.14 mi (980.32 km) |
| Rockville to Pleasant View (Utah) | 1,832.95 mi (2,949.85 km) |
| Rockville to Pleasanton (California) | 2,399.90 mi (3,862.26 km) |
| Rockville to Pleasanton (Texas) | 1,402.71 mi (2,257.44 km) |
| Rockville to Pleasantville (New Jersey) | 142.77 mi (229.77 km) |
| Rockville to Plover (Wisconsin) | 737.23 mi (1,186.46 km) |
| Rockville to Plum (Pennsylvania) | 169.04 mi (272.05 km) |
| Rockville to Plymouth (Indiana) | 507.87 mi (817.33 km) |
| Rockville to Plymouth (Minnesota) | 929.50 mi (1,495.88 km) |
| Rockville to Pocatello (Idaho) | 1,846.61 mi (2,971.82 km) |
