Open access only applies to you personaly, it does not apply to organised events where a fee is taken. permission to cross access land is required and can be refused on various gounds inc erosion, shooting, wildlife etc.
JohnK I'm sure would be able to confirm/clarify this.
You can sort of get round it by not taking a fee and saying it is a social run with in a group. I don't think the PPP comes under social run![]()