The Nordshleife holiday hotlap competition was enjoyable (I did not complete a lap though despite several tries). Machwerk (17 kilometres) and Targa Florio (seventy two kilometres) are very long circuits on public roads. The Targa Flo takes about half an hour in a Retro Cool car for just one lap. They are far too long to be used for a Race Club event. However, they could be fun for a hotlap competition. Just a suggestion. I will add video of them to the post your movies section. Alternatives: If they are too difficult to learn then maybe Schottenring67 (16KM but very fast) or Solitude64 (another very long but fast circuit on public roads). Beez is another one.