Can't speak to the British charity but the US charities (100 mile club and Tyler Robinson Foundation), are both linked to RY's friends with questionable tracking of donation dollars
Already established the 100 mile club put on the "Race Across The Usa" in 2015 which RY "won". They also operate under "Run With Us America" same group, all is the 100 mile club "charity". Same major players, (Kara Lubin, Patrick Sweeney, Alex Ramsay, Maria Walton, Jup Brown, Ed Ettinghausen, Alfa Severino, Vanessa and Shacky Rodriguez, and so on).
Tyler Robinson Foundation is linked to Lisa Smith Batchen and, surprise surprise, was the the charity she was doing her 2016 transcon "for the children" on 2016 until she had her "medical emergency" less than a week in to the ride/run. 2 weeks later, literally 2 weeks later RY adds them as another charity that needs donations for this transcon and invites donations. LSB has been one of RY's most vocal supporters on that touting his incredibleness less than a month ago, unsure now if they will try to look non affiliated to regroup for the next go but it's a little late to pretend to be not affiliated.
These two american charities and?
Aside from these 2 american charities RY is "running for" on this transcon his pals have other charities outside of these two, am compiling a list of all the fake charities associated with RY pals and will post at some point. None of them have tracking of donation dollars, most but not all are variants of the "for the children" theme. They also do a lot of "raising awareness" which is a nice way to say do nothing. With all of these other charities they also do "endurance feats" and ask for donations for charities they or their associates founded with no tracking of where the money goes. It is a cottage industry and how these people live. This is how these people live.