I have 2 coops and runs, my first coop is smaller, and the run is only 5', and it's covered with 1x2 welded wire, with a couple of 2x4's inbetween for support. I am 5'6, and you have no idea how many times I have had a goose egg on the top of my head! My other coop is larger, and we learned, so the run is 6'high and also covered. So much better, plus I have more room to put some roosts in the run, and still be low enough that nothing can injure a bird from the top.
If you want to keep your run clean, you have to go in there, if you have younger ones in the run, you have to go in there to put them to bed at night, until they learn. I feed mine in the coops, but in the summer I put extra pails of water in the runs, which for the most part I can fill with a hose, but every few days I have to go in, empty them and clean the crud out. I know that I am in my run alot more than I ever thought I would be. Having room for a chair in the run is nice also, especially if you don't free range, or like me, you can't free range often.