Very similar to the Otley reliability ride in structure. There is a route, a start point and time, a load of riders and you need to find your own way round the route and back to the start. The whole point is to prove (to yourself) that you and your bike are reliable. It’s not a race, or a group ride, but you’re welcome to ride it with your friends and it should be a great day out.
It’s £5 entry (sign on the day only 9am to 9.45am) and there is food to buy at the finish.