This site is being deprecated.
Please see the official X‑Plane Support page for help.
I don’t remember how long it took for me to download; it depends in part on your broadband connection anyway. Though you can expect around 60 to 70 GB of contents. However, you do not need to download the entire world database all at once to start using X-Plane. So you can spread out the downloads while your machine is not being used.
This site is no longer being actively maintained.