Fear not Dobbo.. this is no 3 peaks challenge
I have been speaking to national trust today and discussing the issues at Wasdale relating to the 3 peaks and how we can pass through without any impact.
We agreed with the sponsors in advance that their cash would be allocated to pay for village halls, farmers fields etc and the full amounts must all be put back into Cumbria. The event will create a large chunk of money which will go back to local businesses and the remainder is donated to footpaths repair for each valley we pass through. I don't know of any other event doing the same although i amy well be wrong.
If anyone dropped litter they would be disqualified (presuming they were spotted) but i think you underestimate the people who enter these kind of events. Long distance walkers and trail / fell runners are outdoor enthusiasts just like you and spend most weekends on the fells, they are not the kind of people who drop litter and cause damage.
I assure you that we will do more that cover our footrpint!