| Round Lake Beach to Oliveira de Frades | 3,970.08 mi (6,389.23 km) |
| Round Lake Beach to Oliveira do Bairro | 3,962.74 mi (6,377.41 km) |
| Round Lake Beach to Oliveira do Hospital | 3,997.15 mi (6,432.79 km) |
| Round Lake Beach to Ourem | 3,990.17 mi (6,421.56 km) |
| Round Lake Beach to Ovar | 3,944.52 mi (6,348.10 km) |
| Round Lake Beach to Pacos de Ferreira | 3,941.20 mi (6,342.76 km) |
| Round Lake Beach to Palmela | 4,013.46 mi (6,459.03 km) |
| Round Lake Beach to Paredes | 3,946.51 mi (6,351.30 km) |
| Round Lake Beach to Paredes de Coura | 3,911.77 mi (6,295.38 km) |
| Round Lake Beach to Penacova | 3,981.19 mi (6,407.10 km) |
| Round Lake Beach to Penafiel | 3,948.52 mi (6,354.53 km) |
| Round Lake Beach to Peniche | 3,964.11 mi (6,379.62 km) |
| Round Lake Beach to Peso da Regua | 3,972.75 mi (6,393.52 km) |
| Round Lake Beach to Pinhal Novo | 4,010.51 mi (6,454.29 km) |
| Round Lake Beach to Pinhel | 4,018.05 mi (6,466.43 km) |
