| Barreiro to Potenza Picena | 1,222.03 mi (1,966.67 km) |
| Barreiro to Pozzallo | 1,310.42 mi (2,108.92 km) |
| Barreiro to Pozzuoli | 1,237.24 mi (1,991.14 km) |
| Barreiro to Prato | 1,103.92 mi (1,776.58 km) |
| Barreiro to Preganziol | 1,187.17 mi (1,910.56 km) |
| Barreiro to Priolo Gargallo | 1,322.02 mi (2,127.58 km) |
| Barreiro to Priverno | 1,188.90 mi (1,913.35 km) |
| Barreiro to Pulsano | 1,407.61 mi (2,265.33 km) |
| Barreiro to Putignano | 1,393.66 mi (2,242.88 km) |
| Barreiro to Qualiano | 1,238.63 mi (1,993.38 km) |
| Barreiro to Quarrata | 1,097.92 mi (1,766.92 km) |
| Barreiro to Quartu Sant'Elena | 979.76 mi (1,576.77 km) |
| Barreiro to Quartucciu | 979.30 mi (1,576.03 km) |
| Barreiro to Quattro Castella | 1,086.04 mi (1,747.81 km) |
| Barreiro to Quinto di Treviso | 1,185.05 mi (1,907.16 km) |
