May 1, 2014 I ran in the Great Wall of China Marathon at Jinshanling, China. This is one of the hardest Marathons in the world and there is nothing in You need to do a lot of stairs training for this as I did for 4 months after I signed up. The training that I did in the Shuzhou, China nearby hills paid off as I had no problems and lucky no injuries. If you want a real challenge then you need to run in this race.