| Round Lake Beach to Montalegre | 3,949.26 mi (6,355.72 km) |
| Round Lake Beach to Montemor-o-Novo | 4,041.96 mi (6,504.91 km) |
| Round Lake Beach to Montemor-o-Velho | 3,966.66 mi (6,383.72 km) |
| Round Lake Beach to Montijo | 4,009.28 mi (6,452.31 km) |
| Round Lake Beach to Mortagua | 3,977.74 mi (6,401.56 km) |
| Round Lake Beach to Moura | 4,096.05 mi (6,591.96 km) |
| Round Lake Beach to Murtosa | 3,949.15 mi (6,355.55 km) |
| Round Lake Beach to Nazare | 3,969.07 mi (6,387.59 km) |
| Round Lake Beach to Nelas | 3,992.16 mi (6,424.75 km) |
| Round Lake Beach to Obidos | 3,973.42 mi (6,394.60 km) |
| Round Lake Beach to Odemira | 4,061.39 mi (6,536.18 km) |
| Round Lake Beach to Odivelas | 3,992.55 mi (6,425.39 km) |
| Round Lake Beach to Oeiras | 3,990.04 mi (6,421.35 km) |
| Round Lake Beach to Olhao | 4,118.75 mi (6,628.49 km) |
| Round Lake Beach to Oliveira de Azemeis | 3,952.60 mi (6,361.10 km) |
