| Harlow to Alenquer | 983.20 mi (1,582.32 km) |
| Harlow to Alfena | 835.17 mi (1,344.08 km) |
| Harlow to Alijo | 809.66 mi (1,303.02 km) |
| Harlow to Aljustrel | 1,038.80 mi (1,671.79 km) |
| Harlow to Almada | 1,009.67 mi (1,624.91 km) |
| Harlow to Almargem | 1,001.52 mi (1,611.79 km) |
| Harlow to Almeirim | 965.22 mi (1,553.37 km) |
| Harlow to Amadora | 1,007.92 mi (1,622.09 km) |
| Harlow to Amarante | 823.01 mi (1,324.50 km) |
| Harlow to Amares | 807.33 mi (1,299.26 km) |
| Harlow to Amora | 1,012.25 mi (1,629.06 km) |
| Harlow to Anadia | 883.30 mi (1,421.53 km) |
| Harlow to Angra do Heroismo | 1,595.24 mi (2,567.29 km) |
| Harlow to Ansiao | 915.87 mi (1,473.95 km) |
| Harlow to Anta | 851.77 mi (1,370.79 km) |
