I'm not sure if something similar to this has been produced before but I've started to create a google map of UK offroad tracks.
Please feel free to add your clubs location to the map and attach the clubs website/postcode etc.
http://maps.google.co.uk/maps/ms?ie=...269043&t=h&z=6
To update a location do the following (you need to have a google email account for it to work):
1. Click on the link.
2. Once its opened search for the location you want to save in the google maps search bar.
3. Once loaded on the left side of the page there is a "save to" option, click on that
4. As you accessed google maps through this link it gives you the option of saving in this map i.e. 1/10th offroad tracks
5. Once saved you can click on edit and update the link with the web page and club info etc
Done!