| Castellanza to Poggio a Caiano | 163.64 mi (263.36 km) |
| Castellanza to Poggio Renatico | 138.86 mi (223.48 km) |
| Castellanza to Poggiomarino | 437.62 mi (704.28 km) |
| Castellanza to Poirino | 70.24 mi (113.04 km) |
| Castellanza to Policoro | 542.25 mi (872.66 km) |
| Castellanza to Polistena | 619.12 mi (996.38 km) |
| Castellanza to Pomezia | 326.76 mi (525.87 km) |
| Castellanza to Pomigliano d'Arco | 426.43 mi (686.27 km) |
| Castellanza to Pompei | 438.71 mi (706.03 km) |
| Castellanza to Ponsacco | 162.36 mi (261.29 km) |
| Castellanza to Pontassieve | 178.10 mi (286.62 km) |
| Castellanza to Ponte Buggianese | 152.57 mi (245.54 km) |
| Castellanza to Ponte San Pietro | 33.70 mi (54.23 km) |
| Castellanza to Pontecorvo | 373.22 mi (600.64 km) |
| Castellanza to Pontedera | 159.64 mi (256.92 km) |
