| Hertford to Pontedera | 749.19 mi (1,205.71 km) |
| Hertford to Pontinia | 947.45 mi (1,524.77 km) |
| Hertford to Porcari | 738.93 mi (1,189.19 km) |
| Hertford to Porcia | 701.95 mi (1,129.69 km) |
| Hertford to Pordenone | 703.92 mi (1,132.85 km) |
| Hertford to Portici | 1,020.42 mi (1,642.21 km) |
| Hertford to Porto Empedocle | 1,200.99 mi (1,932.81 km) |
| Hertford to Porto Recanati | 859.80 mi (1,383.71 km) |
| Hertford to Porto Sant'Elpidio | 871.10 mi (1,401.90 km) |
| Hertford to Porto Tolle | 738.12 mi (1,187.89 km) |
| Hertford to Porto Torres | 857.22 mi (1,379.56 km) |
| Hertford to Portoferraio | 787.11 mi (1,266.74 km) |
| Hertford to Portogruaro | 718.07 mi (1,155.62 km) |
| Hertford to Portomaggiore | 732.56 mi (1,178.93 km) |
| Hertford to Potenza | 1,077.69 mi (1,734.38 km) |
