| Buffalo Grove to Oliveira de Frades | 3,971.48 mi (6,391.48 km) |
| Buffalo Grove to Oliveira do Bairro | 3,964.04 mi (6,379.51 km) |
| Buffalo Grove to Oliveira do Hospital | 3,998.49 mi (6,434.95 km) |
| Buffalo Grove to Ourem | 3,991.22 mi (6,423.25 km) |
| Buffalo Grove to Ovar | 3,945.91 mi (6,350.33 km) |
| Buffalo Grove to Pacos de Ferreira | 3,942.73 mi (6,345.22 km) |
| Buffalo Grove to Palmela | 4,014.16 mi (6,460.17 km) |
| Buffalo Grove to Paredes | 3,948.03 mi (6,353.74 km) |
| Buffalo Grove to Paredes de Coura | 3,913.46 mi (6,298.11 km) |
| Buffalo Grove to Penacova | 3,982.45 mi (6,409.13 km) |
| Buffalo Grove to Penafiel | 3,950.05 mi (6,356.99 km) |
| Buffalo Grove to Peniche | 3,964.97 mi (6,381.01 km) |
| Buffalo Grove to Peso da Regua | 3,974.33 mi (6,396.06 km) |
| Buffalo Grove to Pinhal Novo | 4,011.23 mi (6,455.45 km) |
| Buffalo Grove to Pinhel | 4,019.61 mi (6,468.93 km) |
