| Holyhead to Ponteland | 167.47 mi (269.52 km) |
| Holyhead to Pontneddfechan | 115.98 mi (186.65 km) |
| Holyhead to Pontypridd | 129.86 mi (208.99 km) |
| Holyhead to Poole | 211.57 mi (340.49 km) |
| Holyhead to Port Glasgow | 181.38 mi (291.91 km) |
| Holyhead to Port Talbot | 123.82 mi (199.26 km) |
| Holyhead to Portchester | 226.46 mi (364.46 km) |
| Holyhead to Porthcawl | 132.48 mi (213.20 km) |
| Holyhead to Portishead | 148.71 mi (239.33 km) |
| Holyhead to Portlethen | 277.36 mi (446.36 km) |
| Holyhead to Portsmouth | 229.30 mi (369.02 km) |
| Holyhead to Potters Bar | 217.70 mi (350.35 km) |
| Holyhead to Poulton le Fylde | 76.79 mi (123.58 km) |
| Holyhead to Poynton | 103.86 mi (167.15 km) |
| Holyhead to Prescot | 75.75 mi (121.91 km) |
