| Opfikon to Alenquer | 1,053.92 mi (1,696.13 km) |
| Opfikon to Alfena | 944.15 mi (1,519.47 km) |
| Opfikon to Alijo | 897.06 mi (1,443.68 km) |
| Opfikon to Aljustrel | 1,070.80 mi (1,723.29 km) |
| Opfikon to Almada | 1,076.04 mi (1,731.72 km) |
| Opfikon to Almargem | 1,073.37 mi (1,727.42 km) |
| Opfikon to Almeirim | 1,030.74 mi (1,658.82 km) |
| Opfikon to Amadora | 1,076.81 mi (1,732.95 km) |
| Opfikon to Amarante | 923.08 mi (1,485.55 km) |
| Opfikon to Amares | 921.82 mi (1,483.52 km) |
| Opfikon to Amora | 1,076.80 mi (1,732.95 km) |
| Opfikon to Anadia | 971.35 mi (1,563.24 km) |
| Opfikon to Angra do Heroismo | 1,886.56 mi (3,036.13 km) |
| Opfikon to Ansiao | 992.49 mi (1,597.26 km) |
| Opfikon to Anta | 957.20 mi (1,540.46 km) |
