I know this is a running site, and so the marathon will get a greater response than the decathlon BUT there is a lot of running in the decathlon, and so I'm surprised at the lack of interest in Kevin Mayer's record. And, although, I have run a number of marathons, I would rather hold the decathlon record than the marathon.
After all, being described as "The Greatest All-round athlete in the World" has a terrific ring about it.
So, who's is the greater achievement...I know, it's a daft question but....