Rick Hancock on 5/25/2017 3:26:53 PM:
It's doable...but a pain in the butt!. We had 5 people in my group all on 29er's or 700 hybrids. We got the bikes up by lifting and carrying them with a person on each end. In hindsight we should have removed the panniers. It wasn't THAT HARD but it wasn't that easy. The staircase isn't really a true spiral you have room to maneuver.