For me it is 500k I think.
Hit 520k net worth (only invested money) last year.
Then bought a house, spent a lot of money on repairs, now at 550k net worth (now including house equity...).
I hope the expenses will finally go down to see the net worth take off for good.
I lost my graphs that tracked my 20 years of investing in a computer incident a few years ago, but this is what I remember too.
It seemed to take forever to get that first 500K, which was roughly 16 years into our investing career (but that included the 2008 crash, which set us back a couple years). We also had a slightly more conservative portfolio during that first period (maybe 70/30) b/c of a lot of outstanding debt and cash flow obligations and the need for a big emergency fund.
We reallocated to a more aggressive portfolio at that point (about 85/15). It took only ~4 more years to get to a million, despite the huge 2020 stock market crash that blasted our portfolio. Now the growth is just...silly. I expect we'll reach 2 million within 3-5 years.
ETA: We anticipate staying at 85/15 allocation forever, barring some shocking unforeseen issue occurring (where we are forced to live with no wiggle room in withdrawal rate). Honestly, if it were just up to me, I would likely keep us in 90/10 for the rest of our lives, but my husband doesn't quite have my nerves of steel LOL.