I ride elan all year round as its my local riding spot, so I know it like the back of my hand.
As said before its quite a big area which can be linked up and all sorts of routes can be created, don’t underestimate the climbing, most rides will be 700m+ even around the 20k mark (or it could be all the ones I do!)
Its pretty rideable in all weathers but you will get pretty wet and cold, can be a pretty miserable place in the wrong conditions.
Biggest problem is the majority of the climbing is on grass and this time of year makes for a bit of a slog!
There’s nothing really technical up there apart from the gulley run, but it does make for some great old school mtb.
There’s a couple of man made trails above the church now which can be incorporated into a claerwen side of the valley ride.
Not sure if the rockfall has been repaired on the cycle path before Pen Y Garreg dam which would lead you to bonk Hill and take you to the mountain road and near the top of the golf links climb.
A lot depends on how many miles you want to do?