well worth the long drivethe fun starts here

Try the official park website for accomodation and a weather forcast etc (maps of the Mach trails too)
Great maps on the MTB Wales site.
From the M6 join the M54 and follow untill it becomes the A5
Follow around Shrewsbury untill the roundabout with the A458, (next one after services).
Right here and follow signs for Welshpool then A458 then Dolgellau A494.
Stay on A494/A470 which bypasses Dolgellau (pronounced dol-geth-ow) and effectively just follow this road untill it passes the forest visitor car park entrance on the left after about 3 miles you just follow the signs.

Pay £3 for car parking and have a cuppa in the cafe (weekends only) before riding.

Routes are fully marked, be prepared for some serious climbing.

Numplumz recommend nice big chunky treaded tyres for the most fun as the routes are very rocky, and there is very little mud even in deepest winter.
says it all

Numplumz has stayed at Farmhouse B&B in nearby Dogellllau and recommend this.
Good breakfasts and Tv lounge, and just try and stop them from washing your dirty kit. They will insist and dry out your kit overnight if its wet too.
prop: Mrs C.E. Skeel Jones phone 01341 422 355
Arosfyr, Penycefn Road,Dolgellau,Gwynedd, LL40 2YP.

Youll be needing a weather forecast
(now old) Routes map to download here- Takes about 2 mins but worth it.
Recommended by the locals is a site here - map As you turn into the campsite turn left and then left again just after the phone box.Campsite fees are £4.50 per person per night. For your money you get the usual facilities including immaculate showers (20p required) and toilets as well as several taps for filling water carriers. Food-wise eat at Coed y Brenin or in local pubs.If you are going to cook it would be best to bring food as Dolgellau doesn't really have many late night shopping opportunities ! Bring some insect repellant (Jungle Formula is particularly effective) in order to deter the midges. A torch would also be useful as the campsite is pitch black once dark. There are NO lights
As you drive in from the directions above, you pass little chef as the road opens out into the valley. There is a sign on the left pointing to Dolgellau - it might even have a brown campsite sign. Go down that for a 1/2 - 3/4 of a mile, and there is a house on the left that says (uhhm gotta check that out) Campsite - and there you are.
From the village, you head over the bridge from the kebab shop going east, past the ambulance station, and it's on the right.

More acommodation help
Good site-----: Tanyfron Caravan & Camping Dolgellau Gwynedd LL40 2AA Tel: 01341 422638

Static caravans available at Ferndale, who also have a range of more permananent cottages and rooms. They are friendly and flexible. The contact details are: P Wood Ferndale Ganllwyd Dolgellau Gwynedd, LL40 2HS Tel: 01341 440247 They are right inside the forest and it's great to just get up and ride from the door to the great trails.

While there why not try the nearby Machynlleth routes too. By all accounts the Mach3 route is a bit of a beauty. It's 20 miles.MOUNTAINBIKING IN WALESA great new site with all the info
While you'r in the area how about a crack at Snowdon in the evening. Due to a voluntary ban, mountainbikes can't ride Snowdon until after 5 pm. This easyly driven to ride up to 1000 metres takes about 1.5 hours and the descent takes about 45 minutes !
Cadair Idris. Its about 75-80% ridable going up (but bloody steep) and about 99% ridable going down (the only bit tricky to ride was the last (or first) 200yd scramble upto the summit itself. The big rocky gullies can look very intimidating but aren't actually bad.Great Days riding - one of the few real mountains you can legally ride to the top of .
.There's a bunk house 5 min drive west of Dolgellau, called Cabin Cader Idris, contact David 01766 762 588 or 07887 954 301. No idea what it's like, got the details from the tourist office in Dolgellau (said it was bike-friendly, though). Details here as well