Today we did a nice little 500m climb for a warm up, then went down 400m very slowly (it was very steep and the road surface was a bit bumpy), and then went up another 400m in the afternoon. I think that is proof enough that trikes can do hills. Because we were on very small roads the gradients were far harsher than we have seen so far - we only covered 23 miles. Going down into the valley my brakes got literally boiling hot (I'm glad I tested them with a little water rather than my fingers) and then it was my legs' turn to suffer on the other side. It was a great day's cycling, but we are staying two nights at the hotel to recover and I hope that is enough.