Hard to answer this question, but curious to see different savings/investing strategies from people around here. There is obviously a question of circumstances here - going to college, paying student loans, graduate school, what type of career path you took, etc.
On my end it took about 2 years & 2 months of saving aggressively after college to hit $100K. Even though I lived in an expensive area (LA), was able to save a significant amount of money via living with a roommate. The biggest headstarts I had were having no loan payments & a well-paying job in engineering.