It took us about 3 hours to get to the wall, by bus and taxi, where we arrived closely before 8:30 in the morning. And we finished the walk in 6.5 hours at around 15:00 in the afternoon. Here's what that looks like on the map. Red is the walk on the wall. Blue is the approach by foot (top left), and descend by cable cart (bottom right)
The place where we clambered onto the Wall was quite collapsed, which is why we could get on it, via a makeshift ladder, and we had to take a fair climber up over the rubble to the remains of the first tower. Once over there, the stunning views began rolling out in front of us where ever we looked.
The upcoming third consisted for a big part of a huge detour that the wall made back up to the top of the mountain range, ensuring no surprise assault could be made upon it from higher ground. Great for the Chinese of the old days, but seemingly unnecessary if we hadn't been here for the beauty of it all!