I am not sure about that one.
There is the annual Ride N Stride event that helps raise some funds for the various historic Churches Trusts around the country.
The event happens every year on the second Saturday in September. The way it works is you cycle from Church to Church and sign in at each one. Some are unmanned and you sign yourself in at those and then your route is obvious as you have it on your form.
It would be great fun if we could do a Retrobike mass ride up to you if you raise funds for the local Church and the Historic trusts (half goes to your church of choice the other half to the Trust) Forms are downloadable from the Trusts websites or just do it for the fun of it.