Well, it took me about from August 2017- February 2018 to finish GTA: San Andreas at 100%. There were other things that kept me from finishing it sooner, but I have now completed it after a long time.
It was quite a ride from Los Santos to Red County to San Fierro to the desert to Las Venturas and back home to Los Santos. There was a lot to do and I liked the radio stations in this one. The amount of minigames and things to do and I'm amazed at how Rockstar was able to do all of this within a 2 to 3 year period. But however sometimes the story went all around the place and I can see why a mature direction was taken for GTA 4 (as well as the whole new engine). Carl seems to be a bit naive at times for all the times he was used by other people.
Overall, it was a fun experience.