Hiya
You can get places in the GNR by contacting a charity...I work for the RSPB and we have about 5 places left if you are interested...there is a minimum amount you need to pledge to raise but thats the same with any charity place.
If you are interested to find out more, email me at work (claire.price@rspb.org.uk). I will be attending the GNR and we are planning on meeting our runners, we could probably put you in touch with someone to run with if you wanted to.
Get in touch
Claire
