| Mason City to Alenquer | 4,198.98 mi (6,757.61 km) |
| Mason City to Alfena | 4,137.65 mi (6,658.91 km) |
| Mason City to Alijo | 4,181.92 mi (6,730.15 km) |
| Mason City to Aljustrel | 4,280.98 mi (6,889.57 km) |
| Mason City to Almada | 4,206.85 mi (6,770.28 km) |
| Mason City to Almargem | 4,195.36 mi (6,751.79 km) |
| Mason City to Almeirim | 4,211.04 mi (6,777.02 km) |
| Mason City to Amadora | 4,201.45 mi (6,761.59 km) |
| Mason City to Amarante | 4,156.56 mi (6,689.34 km) |
| Mason City to Amares | 4,131.83 mi (6,649.54 km) |
| Mason City to Amora | 4,210.69 mi (6,776.45 km) |
| Mason City to Anadia | 4,172.05 mi (6,714.26 km) |
| Mason City to Angra do Heroismo | 3,369.79 mi (5,423.15 km) |
| Mason City to Ansiao | 4,191.71 mi (6,745.90 km) |
| Mason City to Anta | 4,141.96 mi (6,665.84 km) |
