
From the Sustrans website ...
"Dolgellau to Machynlleth via Tywyn is challenging and takes you through the heart of Snowdonia, and along some of the amazing Welsh coastline.
You traverse the coastal hills with stunning views north and out to sea, before dropping to Tywyn, home of the Talallyn Railway, and then going out to traverse the hills once again to Machynlleth."
Challenging - understatement . Attempting this on anything less than a mountain bike would be fool hardy.
Views? - What views! We spent the night up there and could barely see 100m in any direction ever!
Talallyn Railway ... absolutely the best cafe and facilities

More hills up Happy Valley.
Was character building on a 29+ with low gears. Benji managed it on a Singlespeed. Nutter. I cannot imagine someone on a traditional touring bike having much fun up there.