| Greenock to Poggibonsi | 1,112.35 mi (1,790.16 km) |
| Greenock to Poggio a Caiano | 1,089.96 mi (1,754.12 km) |
| Greenock to Poggio Renatico | 1,048.54 mi (1,687.46 km) |
| Greenock to Poggiomarino | 1,362.11 mi (2,192.10 km) |
| Greenock to Poirino | 939.62 mi (1,512.18 km) |
| Greenock to Policoro | 1,458.63 mi (2,347.44 km) |
| Greenock to Polistena | 1,545.37 mi (2,487.03 km) |
| Greenock to Pomezia | 1,253.99 mi (2,018.10 km) |
| Greenock to Pomigliano d'Arco | 1,351.06 mi (2,174.33 km) |
| Greenock to Pompei | 1,363.56 mi (2,194.44 km) |
| Greenock to Ponsacco | 1,089.46 mi (1,753.31 km) |
| Greenock to Pontassieve | 1,102.78 mi (1,774.76 km) |
| Greenock to Ponte Buggianese | 1,079.68 mi (1,737.58 km) |
| Greenock to Ponte San Pietro | 941.92 mi (1,515.87 km) |
| Greenock to Pontecorvo | 1,298.63 mi (2,089.94 km) |
