There is no 10 Mario Challenge leaderboard, explains why nobodys runs it expect me. Not all the courses but just one of them. I did some attempts but never succeded. I did stream (Archive: ) (My cap card has 1-2 second delay so thats why the timer was not in sync)

Single 10 Challenge Runs don't do anything, since the order of your levels are random.

When you do all 7 Challenge Runs, you've played all levels of them (with only the order of them being random). When you do only 1 Challenge Run, you'll always have different levels (expect Run 1 after resetting your save game).