| Porsgrunn to Oliveira do Bairro | 1,508.95 mi (2,428.42 km) |
| Porsgrunn to Oliveira do Hospital | 1,504.59 mi (2,421.40 km) |
| Porsgrunn to Ourem | 1,564.66 mi (2,518.08 km) |
| Porsgrunn to Ovar | 1,490.22 mi (2,398.27 km) |
| Porsgrunn to Pacos de Ferreira | 1,460.05 mi (2,349.73 km) |
| Porsgrunn to Palmela | 1,640.22 mi (2,639.67 km) |
| Porsgrunn to Paredes | 1,462.66 mi (2,353.92 km) |
| Porsgrunn to Paredes de Coura | 1,423.96 mi (2,291.64 km) |
| Porsgrunn to Penacova | 1,519.45 mi (2,445.31 km) |
| Porsgrunn to Penafiel | 1,461.16 mi (2,351.51 km) |
| Porsgrunn to Peniche | 1,601.46 mi (2,577.30 km) |
| Porsgrunn to Peso da Regua | 1,452.21 mi (2,337.11 km) |
| Porsgrunn to Pinhal Novo | 1,636.47 mi (2,633.64 km) |
| Porsgrunn to Pinhel | 1,460.60 mi (2,350.60 km) |
| Porsgrunn to Pombal | 1,549.35 mi (2,493.44 km) |
