I've run it a few times and, yes, 8-10 weeks sounds fine. I wouldn't go any longer than that, though. It depends too on how much you're planning on running, and if it's 400mg or above you might want to err on the lower side of that time frame. Obviously, PCT is very important with Tren, and liver protection too - I take Liv 52 and milk thistle alongside it. Also, don't make the mistake that has been on here a couple of times recently, with posters saying they're running Deca alongside Tren - they're both 19-Nor compounds and shouldn't be run together. Good luck.