My 2nd Genting-Sempah ride with Dash 18. Of course I had to work harder to get to the top. In my personal opinion, foldie riders should get much more benefits than the roadies (700c) and mountain bikers (26″). Logically if all of them are riding to the same point, it is true a foldie rider will need extra time and effort than the others because of the smaller wheel size. But in the context of leisure or recreational rides which time doesn’t matter, at the end of the day a foldie rider shall develop much more stamina/muscle.