Do you want to know which obstacles you will face in the 21 km edition of the Hang-On Run? If not, time to hit the back button ;). If so read on, because this page will show all the relevant obstacles. We also described how you need to conquer them. It will be tough! You will be satisfied. What is going to be your strategy? This course is only available for licensees of the Survivalrun foundation Holland (SBN).