http://www.swrc.org.uk/
Check out this link for what looks like an excellent 50 or 85 mile route. I was the only ACC member to take part in their reliability ride in February and it was a brilliant event, well organised with good signs and a very good turn out. As you will see the course begins at Cobham which is ridable but I would advise using a car as it wil be a tiring day, particularly if you do the full course. It would be good to get an ACC bunch together for this attractive ride which has a series of tough climbs (including Combe Bottom) and undulating, rolling countryside.
I believe it will be OK to enter on the line but I would advise sending them a cheque for my £4 to secure your place.
Hope to see you there.
Alan