Wow, where do I begin. This was the most challenging hike of the AZ Winter 2022 Challenge. It was long and a lot of scrambling at the last few hundred feet, maybe more. Often times, I was left wondering “do I go left or do I go right?”. The trail isn't marked very well so you either just follow the crowd or start hiking until you think the path runs out. It took a solid 5 hours to finish the out and back. Once you get to the top, you get an amazing view of The Valley. If you sit towards the edge, you may have little curious visitors (ground squirrels) kindly asking for any food you have to offer. Somewhat unfortunate because people have left food remnants at the top. Please, just pick up your food! Other than that, I am glad to say that I completed Flat Iron. Highly recommend.