First and foremost, I have seen your charity thread, Ozzy (and payday is in a few days

)
But that thread, and a few other things, has really sparked my interest in doing something charitable. I'm in to mountain biking at the moment, so a cross-country type event would be quite cool.
I'm just wondering if you know of any charities who specifically do that type of event, but also with a freedom to choose the supported charity too?
I am thinking about supporting the Jon Egging Trust, which provides inspirational events for people who are not succeeding in formal education, and it will give them an opportunity to experience aviation and develop other skills.
As it is Jon Egging, a ride which goes past RAF stations might be quite fitting.
As for the charity side of things, I take it the one used by Ozzy is a free service, or low comission?
Do you have any ideas for this? It's early on, I know, but I might as well get started!
My current ideas are as follows:
RAF Leeming - RAF Cranwell (111 miles)
RAF Valley - DCAE Cosford (123 miles)
The distances are a bit off due to motorways, etc.
Cheers