| Castel Gandolfo to Piazzola sul Brenta | 265.33 mi (427.00 km) |
| Castel Gandolfo to Pietrasanta | 195.60 mi (314.79 km) |
| Castel Gandolfo to Pieve di Soligo | 286.82 mi (461.59 km) |
| Castel Gandolfo to Pinerolo | 344.26 mi (554.03 km) |
| Castel Gandolfo to Pioltello | 307.82 mi (495.39 km) |
| Castel Gandolfo to Piombino | 136.25 mi (219.28 km) |
| Castel Gandolfo to Piombino Dese | 268.68 mi (432.40 km) |
| Castel Gandolfo to Piossasco | 343.58 mi (552.94 km) |
| Castel Gandolfo to Piove di Sacco | 247.26 mi (397.93 km) |
| Castel Gandolfo to Pisa | 177.71 mi (285.99 km) |
| Castel Gandolfo to Pisticci | 223.83 mi (360.22 km) |
| Castel Gandolfo to Pistoia | 174.77 mi (281.27 km) |
| Castel Gandolfo to Pizzo | 278.73 mi (448.57 km) |
| Castel Gandolfo to Podenzano | 266.84 mi (429.44 km) |
| Castel Gandolfo to Poggibonsi | 141.25 mi (227.32 km) |
