| Rockville to Pawtucket (Rhode Island) | 359.73 mi (578.93 km) |
| Rockville to Payson (Arizona) | 1,911.26 mi (3,075.88 km) |
| Rockville to Payson (Utah) | 1,831.77 mi (2,947.94 km) |
| Rockville to Peabody (Massachusetts) | 401.53 mi (646.20 km) |
| Rockville to Peachtree City (Georgia) | 569.96 mi (917.26 km) |
| Rockville to Peachtree Corners (Georgia) | 528.22 mi (850.08 km) |
| Rockville to Pearl (Mississippi) | 863.85 mi (1,390.23 km) |
| Rockville to Pearl City (Hawaii) | 4,821.45 mi (7,759.37 km) |
| Rockville to Pearl River (New York) | 215.45 mi (346.73 km) |
| Rockville to Pearland (Texas) | 1,224.32 mi (1,970.35 km) |
| Rockville to Pebble Creek (Florida) | 811.28 mi (1,305.63 km) |
| Rockville to Pecan Grove (Texas) | 1,241.32 mi (1,997.72 km) |
| Rockville to Pecos (Texas) | 1,572.93 mi (2,531.39 km) |
| Rockville to Peekskill (New York) | 228.72 mi (368.08 km) |
| Rockville to Pekin (Illinois) | 669.01 mi (1,076.66 km) |
