| River Falls to Arcos de Valdevez | 4,035.44 mi (6,494.42 km) |
| River Falls to Arcozelo | 4,056.79 mi (6,528.78 km) |
| River Falls to Arganil | 4,115.00 mi (6,622.45 km) |
| River Falls to Arouca | 4,078.51 mi (6,563.73 km) |
| River Falls to Arruda dos Vinhos | 4,120.07 mi (6,630.61 km) |
| River Falls to Aveiro | 4,072.88 mi (6,554.66 km) |
| River Falls to Aver-o-Mar | 4,037.67 mi (6,497.99 km) |
| River Falls to Aves | 4,056.34 mi (6,528.04 km) |
| River Falls to Azambuja | 4,125.50 mi (6,639.35 km) |
| River Falls to Baiao | 4,078.44 mi (6,563.62 km) |
| River Falls to Barcelos | 4,039.81 mi (6,501.44 km) |
| River Falls to Barreiro | 4,132.72 mi (6,650.98 km) |
| River Falls to Batalha | 4,105.19 mi (6,606.67 km) |
| River Falls to Beja | 4,210.33 mi (6,775.87 km) |
| River Falls to Belas | 4,119.37 mi (6,629.49 km) |
