hang on a mo:
Marco Consani wins: he was with Garscube Harriers/UvU Racing. His missus is 1st Woman and is indedd with Team Montane. But there were no other Montane sponsored athletes in the 100 and only two in the 50, who came 2nd (Marcus) and 130th (Tony Holland).
Charlie Sharpe of Team 9 Bar came 2nd in the hundred and Kim Collison, also of Team 9 bar, beat Marcus Scotney to first place in the 50! In fact TORQ had a much better overall showing in the 50 than any other team with Calder Valley AC and Kendal AC doing well in the 100.
Then up the A40 to Abergavenny and Crickhowel and then up the A479 to Talgarth. That'll take you through the Black Mountains/Brecon Beacons and there are some good views from the road.
From there take the A470 to Builth (good chip shop) and carry on up to Rhayader. Pop in on the Elan Valley dams if you've time.
At Llangurig take the A44 towards Aberystwyth, which takes you across the southern flank of Plynlimon and past the Red Kite feeding station at Nant yr Arian, which is one of the coolest things you'll see, if you time it right...
Cut across on the A4159 to get onto the A487 towards Machynlleth and carry on up to Dolgellau. Rather good views of Cadair Idris on this bit, then carry on up to Ffestiniog. Opportunity to stop off at Coed y Brenin for a spot of mountain biking, or just to use the loos/cafe.
Ffestiniog to Betws, Betws to Capel and you're at Snowdon!
I have no idea at all how long this trip will take, but it's very scenic indeed and will take you through the best of mid Wales!
as has already been said: if you're not used to winter conditions and don't know how to actually use and axe and crampons, they're less than worthless. A photographer recently fell 150ft on the Glyders and had to be airlifted off: http://www.ogwen-rescue.org.uk/incidents/incidents.php
Both routes you mention are well-used: the route up the Devil's Kitchen from Cwm Idwal is more scenic, the Miner's Track "easier". BUT if the weather is bad don't risk it.