| Clayton to Pontedera | 897.72 mi (1,444.74 km) |
| Clayton to Pontinia | 1,095.51 mi (1,763.05 km) |
| Clayton to Porcari | 887.09 mi (1,427.63 km) |
| Clayton to Porcia | 836.56 mi (1,346.32 km) |
| Clayton to Pordenone | 838.51 mi (1,349.45 km) |
| Clayton to Portici | 1,167.02 mi (1,878.13 km) |
| Clayton to Porto Empedocle | 1,353.33 mi (2,177.98 km) |
| Clayton to Porto Recanati | 1,001.54 mi (1,611.82 km) |
| Clayton to Porto Sant'Elpidio | 1,013.13 mi (1,630.47 km) |
| Clayton to Porto Tolle | 878.28 mi (1,413.45 km) |
| Clayton to Porto Torres | 1,012.05 mi (1,628.74 km) |
| Clayton to Portoferraio | 937.91 mi (1,509.42 km) |
| Clayton to Portogruaro | 852.90 mi (1,372.62 km) |
| Clayton to Portomaggiore | 875.15 mi (1,408.41 km) |
| Clayton to Potenza | 1,221.65 mi (1,966.05 km) |
