There's another guy here in the U.K. claiming to have run 401 marathons every day for 401 days. His charity is an anti-bullying charity.
However, I recall visiting his Strava profile before he made it private, and he was out injured for a while.
He was given quite decent coverage on BBC news too.
I think fundraising for charity is a good thing to do, but I hate the fact it seems to equate to a lack of scrutiny. Then all the decent club runners and sub-elites will have some charity runner's outlandish claims waved in our faces if they mention their next marathon.