My coop sits up about 3 foot. My run extends from that another 4 foot... How steep is too steep for a ladder to get to the run? Its not done yet... But I need to make a way for them to get to the run... (which will be caged with chicken wire)
I went about 45 degree angle. They use that just fine. I've not a clue what too steep would be but do suggest you attach the end low on the coop (they'll easily hop up or down the first 6-8 inches to door) so the other end of ladder isn't too close to run wire. Sometimes they run down or fly last bit of ladder and can hit the wall. Just thinking of any combs getting nicked up on a wire wall.
The framing under coop is 2 ft high, ladder ends 2 ft out other side of door. Gives you an idea anyway of what I mean by the ladder does not have to be right too the door so you can soften the angle.
I was thinking you could attach the end of your ramp under the coop. If you can see with mine above there is an easy 8 inch step from last rung to pop door our girls step to easy. By doing that I bet the other end of ramp can attach to end of your run without creating too step an angle.