| Oak Park to Arcos de Valdevez | 3,923.77 mi (6,314.69 km) |
| Oak Park to Arcozelo | 3,940.46 mi (6,341.56 km) |
| Oak Park to Arganil | 3,995.81 mi (6,430.63 km) |
| Oak Park to Arouca | 3,962.51 mi (6,377.04 km) |
| Oak Park to Arruda dos Vinhos | 3,992.14 mi (6,424.73 km) |
| Oak Park to Aveiro | 3,954.34 mi (6,363.89 km) |
| Oak Park to Aver-o-Mar | 3,922.83 mi (6,313.18 km) |
| Oak Park to Aves | 3,942.82 mi (6,345.36 km) |
| Oak Park to Azambuja | 3,998.49 mi (6,434.95 km) |
| Oak Park to Baiao | 3,964.16 mi (6,379.69 km) |
| Oak Park to Barcelos | 3,925.93 mi (6,318.17 km) |
| Oak Park to Barreiro | 4,003.22 mi (6,442.56 km) |
| Oak Park to Batalha | 3,981.28 mi (6,407.24 km) |
| Oak Park to Beja | 4,080.71 mi (6,567.27 km) |
| Oak Park to Belas | 3,989.89 mi (6,421.11 km) |
