We did the 7 mile loop starting from the visitor's center over two days. We camped at backcountry site #5, which we thought was the best because it is off of the main trail so you have privacy. The only disappointment was that the backcountry sites do not have views of the canyons. The sites are nice, but it is just a wooded area. The majority of the canyon views from the top are accessible from the visitor's area. What I would recommend is to somehow incorporate the trails in the canyons into your trip. We just stuck to the loop so we never were down in the canyons themselves. Other things to note are that you can't filter water due to the iron ore. So be sure to take in all of the water that you will need. Also, the mile markers are a little screwy. For example, you start from the visitor's center and it is roughly 3 miles to the first backcountry site (#6), but it is right past mile marker 2. There is also a shortcut that cuts off the trail that goes to site #1. You can't really get lost, but the trail markings are strange. And, once you get to the canyon floor, the trail IS the creek bed. That confused us for a little bit until we picked up a red blaze. That part can be wet and muddy so prepare for that. Some materials I read said that the 7 mile loop was "extremely rugged". I wouldn't classify it that way at all. There are probably two ascents from the canyon floor, but the canyon is only 150 ft so they aren't bad at all. Overall, I thought it was great, but I would get into the canyons if you can.