I’ve done two 24hr events, one at Eastnor and one at an earlier mayhem venue, think it was trentham gardens? anyway, what i like would be a mixture of both. eastnor was a good track that had a bit of everything, the kenda climg knackered the legs but wasn’t impossible. The only problem with the eastnor track was that it was tacky, as in a bit slow. Yes I know the Scott boys did 38min laps but i’m only human.
It needs a good few bits of singletrack, steady climbs and interesting but not overly technical descents. I say this as when its getting towards the end of the race your shattered and mistakes happen easily.
But the most important thing for me is to try and get something on an all weather venue? something likle a trail centre type covering? At least then the weather would have a smaller effect. Eastnor was good this year but everyone was sleeping in fear that it would be the mub bath its once been.
Distance wise I think about 10 miles is about perfect and height gain I have no idea, i think that relative to the severity of the climbs, i prefer interesting forest climbs that aren’t massively steep and you can just grind away on, like the second climb at Eastnor to the tower thing and the dodgy descent. 😀