| Barreiro to Poggibonsi | 1,100.90 mi (1,771.72 km) |
| Barreiro to Poggio a Caiano | 1,101.54 mi (1,772.75 km) |
| Barreiro to Poggio Renatico | 1,136.62 mi (1,829.21 km) |
| Barreiro to Poggiomarino | 1,259.63 mi (2,027.18 km) |
| Barreiro to Poirino | 969.95 mi (1,560.98 km) |
| Barreiro to Policoro | 1,372.53 mi (2,208.87 km) |
| Barreiro to Polistena | 1,354.26 mi (2,179.47 km) |
| Barreiro to Pomezia | 1,154.36 mi (1,857.76 km) |
| Barreiro to Pomigliano d'Arco | 1,251.68 mi (2,014.39 km) |
| Barreiro to Pompei | 1,257.08 mi (2,023.08 km) |
| Barreiro to Ponsacco | 1,077.52 mi (1,734.10 km) |
| Barreiro to Pontassieve | 1,119.07 mi (1,800.97 km) |
| Barreiro to Ponte Buggianese | 1,086.34 mi (1,748.29 km) |
| Barreiro to Ponte San Pietro | 1,068.00 mi (1,718.77 km) |
| Barreiro to Pontecorvo | 1,213.95 mi (1,953.67 km) |
