| South San Francisco to Alenquer | 5,659.76 mi (9,108.50 km) |
| South San Francisco to Alfena | 5,576.07 mi (8,973.82 km) |
| South San Francisco to Alijo | 5,614.10 mi (9,035.01 km) |
| South San Francisco to Aljustrel | 5,746.82 mi (9,248.61 km) |
| South San Francisco to Almada | 5,671.51 mi (9,127.42 km) |
| South San Francisco to Almargem | 5,659.20 mi (9,107.60 km) |
| South San Francisco to Almeirim | 5,668.42 mi (9,122.43 km) |
| South San Francisco to Amadora | 5,666.06 mi (9,118.64 km) |
| South San Francisco to Amarante | 5,592.16 mi (8,999.71 km) |
| South San Francisco to Amares | 5,565.57 mi (8,956.92 km) |
| South San Francisco to Amora | 5,675.60 mi (9,133.99 km) |
| South San Francisco to Anadia | 5,617.44 mi (9,040.40 km) |
| South San Francisco to Angra do Heroismo | 4,905.89 mi (7,895.27 km) |
| South San Francisco to Ansiao | 5,641.78 mi (9,079.57 km) |
| South San Francisco to Anta | 5,583.10 mi (8,985.13 km) |
