| Potomac to Pelsall | 3,568.04 mi (5,742.20 km) |
| Potomac to Pemberton | 3,522.75 mi (5,669.32 km) |
| Potomac to Pembroke Dock | 3,464.80 mi (5,576.05 km) |
| Potomac to Pen-y-Bont ar Ogwr | 3,524.75 mi (5,672.54 km) |
| Potomac to Penarth | 3,543.12 mi (5,702.10 km) |
| Potomac to Pencoed | 3,527.49 mi (5,676.94 km) |
| Potomac to Pendlebury | 3,537.46 mi (5,692.99 km) |
| Potomac to Penicuik | 3,462.32 mi (5,572.06 km) |
| Potomac to Penistone | 3,564.24 mi (5,736.09 km) |
| Potomac to Penkridge | 3,560.39 mi (5,729.89 km) |
| Potomac to Penrith | 3,499.38 mi (5,631.72 km) |
| Potomac to Penwortham | 3,517.19 mi (5,660.36 km) |
| Potomac to Penzance | 3,469.78 mi (5,584.07 km) |
| Potomac to Perivale | 3,657.74 mi (5,886.56 km) |
| Potomac to Perry Barr | 3,572.87 mi (5,749.98 km) |
