| Mason City to Masanasa | 4,560.66 mi (7,339.68 km) |
| Mason City to Masquefa | 4,565.75 mi (7,347.86 km) |
| Mason City to Matadepera | 4,570.22 mi (7,355.05 km) |
| Mason City to Mazarron | 4,596.92 mi (7,398.02 km) |
| Mason City to Meco | 4,388.89 mi (7,063.24 km) |
| Mason City to Medina del Campo | 4,291.30 mi (6,906.18 km) |
| Mason City to Medina Sidonia | 4,439.93 mi (7,145.38 km) |
| Mason City to Mejorada del Campo | 4,392.63 mi (7,069.26 km) |
| Mason City to Meliana | 4,557.82 mi (7,335.11 km) |
| Mason City to Mengibar | 4,472.50 mi (7,197.79 km) |
| Mason City to Merida | 4,323.91 mi (6,958.66 km) |
| Mason City to Miajadas | 4,325.78 mi (6,961.68 km) |
| Mason City to Mieres | 4,179.83 mi (6,726.79 km) |
| Mason City to Miguelturra | 4,425.77 mi (7,122.59 km) |
| Mason City to Mijas | 4,491.98 mi (7,229.14 km) |
