| River Ridge to Arcos de Valdevez | 4,479.80 mi (7,209.54 km) |
| River Ridge to Arcozelo | 4,486.57 mi (7,220.44 km) |
| River Ridge to Arganil | 4,534.62 mi (7,297.76 km) |
| River Ridge to Arouca | 4,508.77 mi (7,256.16 km) |
| River Ridge to Arruda dos Vinhos | 4,512.39 mi (7,261.99 km) |
| River Ridge to Aveiro | 4,495.54 mi (7,234.87 km) |
| River Ridge to Aver-o-Mar | 4,472.45 mi (7,197.72 km) |
| River Ridge to Aves | 4,494.65 mi (7,233.45 km) |
| River Ridge to Azambuja | 4,520.57 mi (7,275.15 km) |
| River Ridge to Baiao | 4,513.90 mi (7,264.42 km) |
| River Ridge to Barcelos | 4,477.43 mi (7,205.72 km) |
| River Ridge to Barreiro | 4,519.74 mi (7,273.82 km) |
| River Ridge to Batalha | 4,510.45 mi (7,258.87 km) |
| River Ridge to Beja | 4,595.01 mi (7,394.96 km) |
| River Ridge to Belas | 4,506.81 mi (7,253.02 km) |
