| Maryland Heights to Oliveira de Frades | 4,203.20 mi (6,764.40 km) |
| Maryland Heights to Oliveira do Bairro | 4,194.91 mi (6,751.05 km) |
| Maryland Heights to Oliveira do Hospital | 4,229.64 mi (6,806.95 km) |
| Maryland Heights to Ourem | 4,219.76 mi (6,791.05 km) |
| Maryland Heights to Ovar | 4,177.54 mi (6,723.09 km) |
| Maryland Heights to Pacos de Ferreira | 4,175.62 mi (6,720.02 km) |
| Maryland Heights to Palmela | 4,239.43 mi (6,822.71 km) |
| Maryland Heights to Paredes | 4,180.82 mi (6,728.38 km) |
| Maryland Heights to Paredes de Coura | 4,147.82 mi (6,675.27 km) |
| Maryland Heights to Penacova | 4,212.92 mi (6,780.03 km) |
| Maryland Heights to Penafiel | 4,182.90 mi (6,731.73 km) |
| Maryland Heights to Peniche | 4,191.80 mi (6,746.05 km) |
| Maryland Heights to Peso da Regua | 4,207.61 mi (6,771.49 km) |
| Maryland Heights to Pinhal Novo | 4,236.65 mi (6,818.24 km) |
| Maryland Heights to Pinhel | 4,252.68 mi (6,844.03 km) |
