This is an aggressive trail for a day trip. I decided to go clockwise to avoid having to climb out the stone door with weary legs. The trail is difficult in the fall with the leaves down on top of unstable rocks. Despite extreme drought conditions, I was pleased to see Ranger Falls still flowing! The Rim trail is relatively flat with a incredible overlooks from time to time. There's a lot of loose rocks on the Gulf trail. All trails are marked relatively well with placards and junctions have clear signage. Total trip was 9.8 miles with a jaunt to Ranger Falls mixed in.
The scenery was beautiful but I didn't find this hike hard at all. The trails are well maintained and markers are easy to see. If you are looking for a harder trail, try nearby fiery gizzard. I hiked this a few weekends ago and it truly is difficult.
The Collins West portion of the loop is becoming overgrown with thorns and bushes. The Stagecoach portion of the loop is a solid rock trail that is rough on the knees and ankles. The different waterfall areas were very nice even though there was no water.