| Istanbul to Arcos de Valdevez | 1,921.53 mi (3,092.40 km) |
| Istanbul to Arcozelo | 1,943.86 mi (3,128.35 km) |
| Istanbul to Arganil | 1,927.17 mi (3,101.48 km) |
| Istanbul to Arouca | 1,925.61 mi (3,098.96 km) |
| Istanbul to Arruda dos Vinhos | 2,001.45 mi (3,221.02 km) |
| Istanbul to Aveiro | 1,950.91 mi (3,139.69 km) |
| Istanbul to Aver-o-Mar | 1,945.35 mi (3,130.73 km) |
| Istanbul to Aves | 1,921.05 mi (3,091.63 km) |
| Istanbul to Azambuja | 1,989.53 mi (3,201.84 km) |
| Istanbul to Baiao | 1,911.39 mi (3,076.09 km) |
| Istanbul to Barcelos | 1,936.03 mi (3,115.74 km) |
| Istanbul to Barreiro | 2,007.70 mi (3,231.08 km) |
| Istanbul to Batalha | 1,975.25 mi (3,178.86 km) |
| Istanbul to Beja | 1,959.50 mi (3,153.51 km) |
| Istanbul to Belas | 2,016.10 mi (3,244.60 km) |
