| Mercer Island to Pontefract | 4,634.75 mi (7,458.91 km) |
| Mercer Island to Ponteland | 4,551.07 mi (7,324.24 km) |
| Mercer Island to Pontneddfechan | 4,677.73 mi (7,528.08 km) |
| Mercer Island to Pontypridd | 4,692.61 mi (7,552.03 km) |
| Mercer Island to Poole | 4,777.21 mi (7,688.18 km) |
| Mercer Island to Port Glasgow | 4,429.60 mi (7,128.75 km) |
| Mercer Island to Port Talbot | 4,680.69 mi (7,532.84 km) |
| Mercer Island to Portchester | 4,793.82 mi (7,714.91 km) |
| Mercer Island to Porthcawl | 4,689.55 mi (7,547.09 km) |
| Mercer Island to Portishead | 4,714.72 mi (7,587.61 km) |
| Mercer Island to Portlethen | 4,435.03 mi (7,137.48 km) |
| Mercer Island to Portsmouth | 4,796.67 mi (7,719.50 km) |
| Mercer Island to Potters Bar | 4,772.08 mi (7,679.92 km) |
| Mercer Island to Poulton le Fylde | 4,582.74 mi (7,375.21 km) |
| Mercer Island to Poynton | 4,632.16 mi (7,454.74 km) |
