| Castel Gandolfo to Poggio a Caiano | 164.05 mi (264.01 km) |
| Castel Gandolfo to Poggio Renatico | 216.66 mi (348.67 km) |
| Castel Gandolfo to Poggiomarino | 118.30 mi (190.38 km) |
| Castel Gandolfo to Poirino | 326.09 mi (524.79 km) |
| Castel Gandolfo to Policoro | 235.10 mi (378.35 km) |
| Castel Gandolfo to Polistena | 293.33 mi (472.06 km) |
| Castel Gandolfo to Pomezia | 9.40 mi (15.14 km) |
| Castel Gandolfo to Pomigliano d'Arco | 107.31 mi (172.70 km) |
| Castel Gandolfo to Pompei | 118.15 mi (190.15 km) |
| Castel Gandolfo to Ponsacco | 164.92 mi (265.41 km) |
| Castel Gandolfo to Pontassieve | 153.07 mi (246.34 km) |
| Castel Gandolfo to Ponte Buggianese | 173.92 mi (279.90 km) |
| Castel Gandolfo to Ponte San Pietro | 312.87 mi (503.51 km) |
| Castel Gandolfo to Pontecorvo | 56.03 mi (90.17 km) |
| Castel Gandolfo to Pontedera | 167.40 mi (269.41 km) |
