| Holyhead to Parma Heights (Ohio) | 3,520.35 mi (5,665.46 km) |
| Holyhead to Parole (Maryland) | 3,424.39 mi (5,511.02 km) |
| Holyhead to Parsippany (New Jersey) | 3,253.80 mi (5,236.48 km) |
| Holyhead to Pasadena (California) | 5,205.60 mi (8,377.60 km) |
| Holyhead to Pasadena (Maryland) | 3,416.70 mi (5,498.65 km) |
| Holyhead to Pasadena (Texas) | 4,623.39 mi (7,440.63 km) |
| Holyhead to Pasadena Hills (Florida) | 4,177.76 mi (6,723.46 km) |
| Holyhead to Pascagoula (Mississippi) | 4,326.16 mi (6,962.28 km) |
| Holyhead to Pasco (Washington) | 4,555.01 mi (7,330.59 km) |
| Holyhead to Passaic (New Jersey) | 3,242.69 mi (5,218.61 km) |
| Holyhead to Pataskala (Ohio) | 3,620.95 mi (5,827.35 km) |
| Holyhead to Patchogue (New York) | 3,202.42 mi (5,153.79 km) |
| Holyhead to Paterson (New Jersey) | 3,241.52 mi (5,216.72 km) |
| Holyhead to Patterson (California) | 5,110.80 mi (8,225.05 km) |
| Holyhead to Pawtucket (Rhode Island) | 3,087.72 mi (4,969.20 km) |
