In reply to Tony the Blade: If you want to avoid the snow..
Moel Eilio? Run up from llanberis, up past the YHA, at the top of the road turn right on a farm track/b'way, follow that along to another road which takes you up to bwlch y groes, branch off and climb Eilio.. along to Foel Goch and down maesgwm, or up Cynghorion.. false summits beware.. and if safe plummit off directly down towards llanberis.. or drop down to bwlch brynnog and follow a minor trod around to the bunkhouse and then back to llanberis..
Miners/pyg always a nice circuit though..
Otherwise Nantlle ridge, there's a lovely 6 miler from Pont Caer gors, follow forest trails into the main cwm, take the bridleway up towards cwm pennant, at the bwlch follow minor trods along the ridge to climb to nantlle ridge, then turn right and follow the ridge back to Garn.. snow level at the moment may be just above those summits.. descend directly back towards the forest, not the usual path, and back along forest trails to the start. Park at the road entrance.. just by the railway.
Other one,.. my favourite hill.. mynydd mawr from rhyd Ddu, through the forest, climb to the ridge and climb up to the summit.. and back.. stunning views.
lastly Moelwyns from Croesor.. plenty of circuits...