至るまで
Meanings
1
Used in the pattern ~に至るまで to emphasize that something extends to an extreme or unexpected point, often translated as 'even' or 'as far as'.
We investigated thoroughly, down to the smallest detail.
He is particular about everything, even his clothing.
2
from ... to ...; everything from ... to ...
Used in the pattern ~から~に至るまで to list a range, often implying comprehensiveness or variety.
It's an event that everyone can enjoy, from children to adults.
I was covered in mud from head to toe.