Lets see is there any takers. Middle course (~4km?) for an unfit H50 runner/hiker who wants to try his new O glasses (+1.5), preferably by next weekend (January 24-26 2020).
Those are permanent controls 2019, you can partly use those if you like.
Natural preserve by the river is OOB. Start/finist at south (I'l hike or bike there from south). It can be night O course too.Here
can be found some gopro footage to get some impression how the terrain is like.