The Royal Arch is located in the Flatirons. I drove to Chatauqua Park and met a meetup group by the ranger station. I was a little nervous going into this hike, being rated moderate to strenuous and I knew there were lots of stairs. Before I moved to Colorado, I never had any breathing problems, but now, I think I have asthma so the hikes and snowshoeing turn out to be less fun as I struggle to catch my breath. But, with an upcoming trip, I figured I needed the warm up.
I went from being in the front of the pack at the beginning to the last one within 20 minutes of our hike, and last I stayed all the way. I was essentially hiking alone, which is fine when you can't maintain conversations anyway. I stopped for a lot of breaks and sips of water. The elevation gain was 1,205 feet with a lot of 'stairs'.
It took me 80 minutes to get to the arch. It was pretty, but crowded, not just with the meetup group (who apparently had a long lunch up there) but also with lots of other hikers who passed me along the way. I ate a bar, took a few photos, rested about 10 minutes and then the group headed back down. I was able to talk to a handful of people on the way down, and down only took about 20-25 minutes. I am glad I went, and for the first hike of the season, it will only get better.
The trail is 3.2 miles round trip, very popular, and a good hike. I suggest you give it a try!