Hi Mekovach and welcome to the forums. :flower:
That's kind of hard to answer as there are so many variables.
Encoding can take a lot longer than burning depending on the software used, the type of encoding you're doing, and most importantly how fast your hardware is.
Burn speed also varies depending on the rated speed of the media, the software you use, how full the disc is, whether the disc is dual or single layer, the writing mode of the drive, whether or not you have verification enabled, and whether or not you want to optimise burn quality.
Here's a rough guide to burning speeds for the average modern PC.
Generally speaking for maximum burn quality I find burning at half the rated speed of the disc works best. So I normally buy good quality 16x media (Verbatim or Taiyo Yuden) and burn at 8x.