Hi Brian....
Good to have you guys on board
Hopefully we'll meet up between the coasts...

Just to chuck by 2p worth in.

I agree with the sentiment here.
Don't feel bad about your idea, but the 3 Peaks is a dreadful event for the environment, despite the charitable cause.
It trashes the hillsides with a massive over subscription of people, a small minority of whom also leave litter and all manner of rubbish.
I would give it a wide berth, and use the board to find out other options which are much nicer and more wonderful..

Hope you have a mighty crossing, and see you guys in May (I hope)