If you’re keen on gravel and dirt rides or races like the DK or Almanzo, then check out the Dirty Reiver event in the UK:

“The Dirty Reiver 200 (200km) and Dirty One Thirty (130km) are off road cycling challenges based on the Gravel Grinder format found predominantly in the mid west of America.
Riders will traverse gravel forest access roads that service the vast areas of forest covering the border region of England and Scotland. The events will take riders through remote areas providing outstanding viewpoints across this spectacular part of the UK.”