| Helena to Arcos de Valdevez | 4,742.13 mi (7,631.72 km) |
| Helena to Arcozelo | 4,772.10 mi (7,679.95 km) |
| Helena to Arganil | 4,834.56 mi (7,780.48 km) |
| Helena to Arouca | 4,792.68 mi (7,713.07 km) |
| Helena to Arruda dos Vinhos | 4,856.28 mi (7,815.43 km) |
| Helena to Aveiro | 4,792.10 mi (7,712.13 km) |
| Helena to Aver-o-Mar | 4,750.48 mi (7,645.17 km) |
| Helena to Aves | 4,766.15 mi (7,670.38 km) |
| Helena to Azambuja | 4,859.86 mi (7,821.20 km) |
| Helena to Baiao | 4,789.26 mi (7,707.56 km) |
| Helena to Barcelos | 4,750.71 mi (7,645.53 km) |
| Helena to Barreiro | 4,871.67 mi (7,840.20 km) |
| Helena to Batalha | 4,834.07 mi (7,779.68 km) |
| Helena to Beja | 4,947.94 mi (7,962.94 km) |
| Helena to Belas | 4,858.54 mi (7,819.06 km) |
