| Opovo to Alenquer | 1,557.07 mi (2,505.87 km) |
| Opovo to Alfena | 1,475.11 mi (2,373.95 km) |
| Opovo to Alijo | 1,422.94 mi (2,290.00 km) |
| Opovo to Aljustrel | 1,550.60 mi (2,495.45 km) |
| Opovo to Almada | 1,574.91 mi (2,534.58 km) |
| Opovo to Almargem | 1,575.42 mi (2,535.39 km) |
| Opovo to Almeirim | 1,533.26 mi (2,467.55 km) |
| Opovo to Amadora | 1,576.97 mi (2,537.88 km) |
| Opovo to Amarante | 1,452.05 mi (2,336.84 km) |
| Opovo to Amares | 1,456.97 mi (2,344.77 km) |
| Opovo to Amora | 1,574.62 mi (2,534.11 km) |
| Opovo to Anadia | 1,490.54 mi (2,398.79 km) |
| Opovo to Angra do Heroismo | 2,455.18 mi (3,951.23 km) |
| Opovo to Ansiao | 1,504.23 mi (2,420.82 km) |
| Opovo to Anta | 1,485.51 mi (2,390.69 km) |
