as far as—
1. up to a point or place mentioned:
- We went as far as the Marble Lodge, a keeper’s cottage, and came back the same way.
2. to the extent that:
- As far as I can tell, people reply according to what their experience and knowledge is and to the best of their ability.
so far as — = as far as 2:
- So far as I can remember, I’ve always been success-driven and goal-oriented, and all it’s gotten me is a mediocre job.