| Helena to Alenquer | 4,854.95 mi (7,813.29 km) |
| Helena to Alfena | 4,767.54 mi (7,672.61 km) |
| Helena to Alijo | 4,804.58 mi (7,732.23 km) |
| Helena to Aljustrel | 4,942.82 mi (7,954.71 km) |
| Helena to Almada | 4,867.50 mi (7,833.48 km) |
| Helena to Almargem | 4,855.04 mi (7,813.44 km) |
| Helena to Almeirim | 4,862.89 mi (7,826.07 km) |
| Helena to Amadora | 4,862.05 mi (7,824.71 km) |
| Helena to Amarante | 4,783.17 mi (7,697.77 km) |
| Helena to Amares | 4,756.39 mi (7,654.67 km) |
| Helena to Amora | 4,871.62 mi (7,840.12 km) |
| Helena to Anadia | 4,809.90 mi (7,740.78 km) |
| Helena to Angra do Heroismo | 4,134.58 mi (6,653.96 km) |
| Helena to Ansiao | 4,834.97 mi (7,781.14 km) |
| Helena to Anta | 4,774.96 mi (7,684.56 km) |
