| SeaTac to Oliveira de Frades | 5,131.67 mi (8,258.63 km) |
| SeaTac to Oliveira do Bairro | 5,131.60 mi (8,258.52 km) |
| SeaTac to Oliveira do Hospital | 5,161.45 mi (8,306.55 km) |
| SeaTac to Ourem | 5,175.25 mi (8,328.76 km) |
| SeaTac to Ovar | 5,108.60 mi (8,221.50 km) |
| SeaTac to Pacos de Ferreira | 5,095.30 mi (8,200.09 km) |
| SeaTac to Palmela | 5,221.24 mi (8,402.77 km) |
| SeaTac to Paredes | 5,101.05 mi (8,209.35 km) |
| SeaTac to Paredes de Coura | 5,055.79 mi (8,136.52 km) |
| SeaTac to Penacova | 5,151.96 mi (8,291.28 km) |
| SeaTac to Penafiel | 5,102.39 mi (8,211.50 km) |
| SeaTac to Peniche | 5,163.67 mi (8,310.13 km) |
| SeaTac to Peso da Regua | 5,121.47 mi (8,242.22 km) |
| SeaTac to Pinhal Novo | 5,217.34 mi (8,396.50 km) |
| SeaTac to Pinhel | 5,165.40 mi (8,312.91 km) |
