That’s the classic gap ride @singlespeedstu – lots of options to extend/change it but we start from Talybont, up the old tram track, over the moor, descend to close to heritage railway, then up the old roman road to the Gap itself and down the otherside into the Talybont valley. Finsih with 5km of canal path.
Route profile there, if you want a GPX let me know. If you’re ever down this way I’d be very happy to show you round if you don’t know it.
I find those rutted, rocky trails ride better in the half light 🙂 I don’t want to look at them!