| Greenford to Pell City (Alabama) | 4,282.65 mi (6,892.25 km) |
| Greenford to Pella (Iowa) | 4,159.79 mi (6,694.53 km) |
| Greenford to Pembroke Pines (Florida) | 4,412.33 mi (7,100.96 km) |
| Greenford to Pendleton (Oregon) | 4,790.65 mi (7,709.80 km) |
| Greenford to Pensacola (Florida) | 4,475.31 mi (7,202.32 km) |
| Greenford to Peoria (Arizona) | 5,250.41 mi (8,449.72 km) |
| Greenford to Peoria (Illinois) | 4,066.88 mi (6,545.02 km) |
| Greenford to Perris (California) | 5,414.35 mi (8,713.55 km) |
| Greenford to Perry (Georgia) | 4,232.56 mi (6,811.65 km) |
| Greenford to Perry Hall (Maryland) | 3,609.93 mi (5,809.61 km) |
| Greenford to Perrysburg (Ohio) | 3,800.20 mi (6,115.83 km) |
| Greenford to Perth Amboy (New Jersey) | 3,470.89 mi (5,585.86 km) |
| Greenford to Peru (Indiana) | 3,930.59 mi (6,325.67 km) |
| Greenford to Petal (Mississippi) | 4,512.85 mi (7,262.73 km) |
| Greenford to Petaluma (California) | 5,325.26 mi (8,570.18 km) |
