20 Classic Walks in a Walkers Paradise:

Padarn Country park, an easy 4.5 mile walk of up to 3.5 hours.
Mynydd Pen-Rhos from Ty'n-y-groes, an easy 4 mile walk of up to 3 hours.
Nant Gwernol and Bryn-Eglwys Slate Quarry from Abergynolwyn Station, an easy 5.5 mile walk of up to 3.5 hours.
Aber Falls, an easy 6.5 mile walk of up to 4 hours.
Tremadog and Porthmadog from Borth-y-Gest, an easy 7.5 mile walk of up to 4.5 hours.
Capel Garmon Long Cairn, Conwyn Falls and Fairy Glen from Betwys-y-Coed. An easy/medium 6 mile walk of up to 4.5 hours.
Llangelynin Church from the Sychnant Pass, an easy/medium 6.5 mile walk of up to 4.5 hours.
Ty Mawr from Dolwyddelan, an easy/medium 7 mile walk of up to 5 hours.
A Panorama walk from Barmouth, a medium 5.5 mile walk of up to 4 hours.
Cregennen Lakes and the Barmouth Estuary from Arthog, a medium 9 mile walk of up to 5.5 hours.
Pen-y-gaer and Canovium, a medium 8 mile walk of up to 5 hours.
Happy Valley, Carn March Arthur and the Bearded Lake, a medium 7.5 mile walk of up to 5 hours.
Dduallt and Ceunant Cynfal from Llan Ffestiniog, a medium 7.5 mile walk of up to 5 hours.
Sygun Copper Mine from Nantmor, a medium 8 mile walk of up to 6 hours.
Moelwyn Mawr from Tanygrisiau, a medium/difficult 7.5 mile walk of up to 5.5 hours.
The Roman Steps from Llyn Cwm Bychan, a medium/difficult 8.5 miles of up to 7 hours.
Llyn Crafnant and Swallow Falls from Capel Curig, a medium/difficult 11 mile walk of up to 7.5 hours.
Snowdon by way of the Rhyd Ddu and Snowdon Ranger Paths, a difficult 10 mile walk of up to 7 hours.
Diffwys and Y Llethr, a difficult 12 mile walk of up to 8 hours.
Cadair Idris, a very difficult 12 mile walk of up to 9 hours.