| Johnston to Arcos de Valdevez | 4,194.51 mi (6,750.42 km) |
| Johnston to Arcozelo | 4,213.40 mi (6,780.81 km) |
| Johnston to Arganil | 4,270.11 mi (6,872.08 km) |
| Johnston to Arouca | 4,235.32 mi (6,816.09 km) |
| Johnston to Arruda dos Vinhos | 4,270.31 mi (6,872.41 km) |
| Johnston to Aveiro | 4,228.30 mi (6,804.80 km) |
| Johnston to Aver-o-Mar | 4,195.06 mi (6,751.29 km) |
| Johnston to Aves | 4,214.45 mi (6,782.51 km) |
| Johnston to Azambuja | 4,276.27 mi (6,882.00 km) |
| Johnston to Baiao | 4,236.17 mi (6,817.45 km) |
| Johnston to Barcelos | 4,197.71 mi (6,755.56 km) |
| Johnston to Barreiro | 4,282.08 mi (6,891.35 km) |
| Johnston to Batalha | 4,257.68 mi (6,852.08 km) |
| Johnston to Beja | 4,359.70 mi (7,016.25 km) |
| Johnston to Belas | 4,268.73 mi (6,869.86 km) |
