Another way to discover all the amazing mountain biking around Whistler:

On Monday nights, one of the local shops, Willies, has a Come Ride With Us ride. Open to everyone (I believe a drop in fee is $10). Rides start at 6:30, sign in as at 6:00. (meet at the back of the shop at Nesters - just ask any local where Willies in Nesters is and they can point the way - it's about 3 kilometres north of the main Village)
There are usually 4 groups (beginner, intermediate (slow and fast) as well as advanced. All groups are led by fantastic guides.

It's a great way to see the trails around town.

And then everyone goes out for beer afterwards.

Enjoy your time here!