Hiked Nov. 5 when my wife's little brother came to visit. Forewarning: there will never not be a ton of people at this park. Most of the crowds will disperse as you make your way up the mountain, but Royal Arch will be popular without much room for privacy at the destination. First bit is wide and paved if you take the left route at the Chautauqua trailhead. The distance and elevation change don't appear difficult, but the climb is a lot more steep than you'd give it credit for. Not overwhelming for an experienced hiker, but something to take into account. A few bigger stepping sections, some which require a brief scramble. Dogs are allowed up but a bit more difficult to manage on narrower trail with big crowds. Royal Arch is unique, and a must-see if you live nearby.
Yan L. on First and Second Flatiron Hike
Breathtaking view at the top! Not hard but easily get off trail. when you get to the top, there is a side trail behind the rocks (easy to miss) to take you to an open area with great view, and perfect for a picnic. It took us 2 and half hours round trip with small kids in our group. Will come back again!