| Greenock to Pemberton | 186.46 mi (300.08 km) |
| Greenock to Pembroke Dock | 294.20 mi (473.47 km) |
| Greenock to Pen-y-Bont ar Ogwr | 310.76 mi (500.13 km) |
| Greenock to Penarth | 319.02 mi (513.42 km) |
| Greenock to Pencoed | 310.18 mi (499.19 km) |
| Greenock to Pendlebury | 194.99 mi (313.81 km) |
| Greenock to Penicuik | 60.47 mi (97.32 km) |
| Greenock to Penistone | 209.05 mi (336.44 km) |
| Greenock to Penkridge | 246.99 mi (397.50 km) |
| Greenock to Penrith | 118.88 mi (191.32 km) |
| Greenock to Penwortham | 173.00 mi (278.42 km) |
| Greenock to Penzance | 404.15 mi (650.42 km) |
| Greenock to Perivale | 354.68 mi (570.80 km) |
| Greenock to Perry Barr | 263.29 mi (423.72 km) |
| Greenock to Perth | 59.77 mi (96.19 km) |
