| Porsgrunn to Potenza Picena | 1,100.72 mi (1,771.44 km) |
| Porsgrunn to Pozzallo | 1,563.76 mi (2,516.63 km) |
| Porsgrunn to Pozzuoli | 1,278.33 mi (2,057.27 km) |
| Porsgrunn to Prato | 1,054.25 mi (1,696.66 km) |
| Porsgrunn to Preganziol | 939.72 mi (1,512.33 km) |
| Porsgrunn to Priolo Gargallo | 1,536.15 mi (2,472.20 km) |
| Porsgrunn to Priverno | 1,228.61 mi (1,977.26 km) |
| Porsgrunn to Pulsano | 1,336.40 mi (2,150.73 km) |
| Porsgrunn to Putignano | 1,302.33 mi (2,095.90 km) |
| Porsgrunn to Qualiano | 1,272.09 mi (2,047.24 km) |
| Porsgrunn to Quarrata | 1,056.30 mi (1,699.95 km) |
| Porsgrunn to Quartu Sant'Elena | 1,373.38 mi (2,210.24 km) |
| Porsgrunn to Quartucciu | 1,372.58 mi (2,208.95 km) |
| Porsgrunn to Quattro Castella | 1,001.13 mi (1,611.17 km) |
| Porsgrunn to Quinto di Treviso | 935.97 mi (1,506.30 km) |
