Hike to Fittz Roy from El Chalten

I left at 9 am for the 8 hr hike to and back to the Fitz Roy lookout. The trek there was beautiful and mostly flat until the last hour which is straight up. But it was all worthwhile as you have the best view of Fitz Roy and the glacier lake at its foot. The trek back, however, was a different story. The 4 hr hike back to the hostel turned into 7 hours as I took the wrong trail and saw an entire part of the country that I was not expecting. Well marked trail, just the wrong one. lol