In Japan this TV show is called Sasuke. It is an obstacle course divided into 4 stages. Only 2 guys were able to finish the whole course out of 100 people each tournament for 20 tournaments. There is even an all female version with a different course. It has elements of a typical Japanese game show, crazy contestants mixed in with the serious ones, and the crowd carrying on when someone falls, unless it is one of the all stars. I think I have seen all the episodes for each version.
Here is a sample: