| Oregon to Arcos de Valdevez | 3,733.29 mi (6,008.15 km) |
| Oregon to Arcozelo | 3,748.04 mi (6,031.88 km) |
| Oregon to Arganil | 3,802.11 mi (6,118.91 km) |
| Oregon to Arouca | 3,770.17 mi (6,067.51 km) |
| Oregon to Arruda dos Vinhos | 3,795.03 mi (6,107.51 km) |
| Oregon to Aveiro | 3,761.00 mi (6,052.74 km) |
| Oregon to Aver-o-Mar | 3,731.05 mi (6,004.55 km) |
| Oregon to Aves | 3,751.54 mi (6,037.53 km) |
| Oregon to Azambuja | 3,801.72 mi (6,118.28 km) |
| Oregon to Baiao | 3,772.51 mi (6,071.28 km) |
| Oregon to Barcelos | 3,734.54 mi (6,010.15 km) |
| Oregon to Barreiro | 3,805.48 mi (6,124.33 km) |
| Oregon to Batalha | 3,785.74 mi (6,092.57 km) |
| Oregon to Beja | 3,882.79 mi (6,248.75 km) |
| Oregon to Belas | 3,792.19 mi (6,102.94 km) |
