Welsh 3000s Challenge
This is the ultimate Snowdonia walking adventure. Traversing the three main Snowdonia Massifs, Snowdon, Glyderau and the Carneddau. Summit all the Snowdonia’s peaks over 3000ft, from Snowdon to Foel Fras. You can plan to do it in 24 hours or over 2 days staying in fully equipped mountains huts.
http://mountaineeringjoe.co.uk/mountaineering/mountain-challenges/ for more information!