| Gretna to Pelsall | 4,528.96 mi (7,288.66 km) |
| Gretna to Pemberton | 4,482.44 mi (7,213.79 km) |
| Gretna to Pembroke Dock | 4,427.45 mi (7,125.29 km) |
| Gretna to Pen-y-Bont ar Ogwr | 4,487.35 mi (7,221.69 km) |
| Gretna to Penarth | 4,505.72 mi (7,251.25 km) |
| Gretna to Pencoed | 4,490.06 mi (7,226.05 km) |
| Gretna to Pendlebury | 4,497.09 mi (7,237.37 km) |
| Gretna to Penicuik | 4,417.20 mi (7,108.79 km) |
| Gretna to Penistone | 4,523.62 mi (7,280.07 km) |
| Gretna to Penkridge | 4,521.21 mi (7,276.19 km) |
| Gretna to Penrith | 4,456.89 mi (7,172.67 km) |
| Gretna to Penwortham | 4,476.53 mi (7,204.28 km) |
| Gretna to Penzance | 4,433.39 mi (7,134.86 km) |
| Gretna to Perivale | 4,619.63 mi (7,434.58 km) |
| Gretna to Perry Barr | 4,533.93 mi (7,296.65 km) |
