North Wales: Pont Scethin- in any weather.
Mid Wales: Tywi & Teifi Headwaters loop, including the Tywi Track. In high water or in drought with a pint in Pontrhydfendigaid.
West Wales: Mynydd Preseli. Dry weather.
South Wales- A big Mynydd Ddu mountain loop involving Dan yr Ogof, near Abercraf
East Wales: Black Mountains loop, including Yr Das, either up or down.
Missed out Doethie Valley though, not sure why. It’s pretty good :)