| Sterling Heights to Oliveira de Frades | 3,733.60 mi (6,008.65 km) |
| Sterling Heights to Oliveira do Bairro | 3,725.63 mi (5,995.82 km) |
| Sterling Heights to Oliveira do Hospital | 3,760.27 mi (6,051.56 km) |
| Sterling Heights to Ourem | 3,751.44 mi (6,037.36 km) |
| Sterling Heights to Ovar | 3,707.97 mi (5,967.40 km) |
| Sterling Heights to Pacos de Ferreira | 3,705.60 mi (5,963.59 km) |
| Sterling Heights to Palmela | 3,772.61 mi (6,071.43 km) |
| Sterling Heights to Paredes | 3,710.83 mi (5,972.01 km) |
| Sterling Heights to Paredes de Coura | 3,677.31 mi (5,918.05 km) |
| Sterling Heights to Penacova | 3,743.80 mi (6,025.07 km) |
| Sterling Heights to Penafiel | 3,712.90 mi (5,975.33 km) |
| Sterling Heights to Peniche | 3,724.23 mi (5,993.57 km) |
| Sterling Heights to Peso da Regua | 3,737.46 mi (6,014.86 km) |
| Sterling Heights to Pinhal Novo | 3,769.76 mi (6,066.84 km) |
| Sterling Heights to Pinhel | 3,782.61 mi (6,087.52 km) |
