| Mason City to Ames | 4,071.37 mi (6,552.24 km) |
| Mason City to Amorebieta | 4,308.25 mi (6,933.46 km) |
| Mason City to Amposta | 4,547.75 mi (7,318.89 km) |
| Mason City to Amurrio | 4,303.67 mi (6,926.09 km) |
| Mason City to Andoain | 4,338.05 mi (6,981.41 km) |
| Mason City to Andraitx | 4,672.63 mi (7,519.87 km) |
| Mason City to Andujar | 4,458.98 mi (7,176.04 km) |
| Mason City to Antequera | 4,478.13 mi (7,206.85 km) |
| Mason City to Antigua | 4,389.11 mi (7,063.59 km) |
| Mason City to Aranda de Duero | 4,328.82 mi (6,966.56 km) |
| Mason City to Aranjuez | 4,397.88 mi (7,077.70 km) |
| Mason City to Archena | 4,575.94 mi (7,364.26 km) |
| Mason City to Arcos de la Frontera | 4,433.68 mi (7,135.31 km) |
| Mason City to Arenys de Mar | 4,592.68 mi (7,391.21 km) |
| Mason City to Arenys de Munt | 4,590.97 mi (7,388.45 km) |
