There is a ton of stuff just outside the valley, right off rt 49, Sandwich notch rd. I can't be spefic because I usually am following in a group. Sorry. Check out http://rhinobikeworksnh.com/ in Plymouth they are very helpful. Also, if you have the kids the Gyro trial in Plymouth would be a blast for them. There is also fox park in Plymouth.
The valley has some nice intermidate trails and the lift access off of Snows mountain is limited but still fun & cheap.