Quite a few opportunities for winter fun are opening up this week in the Bitterroot Valley, thanks to a host of volunteers.

East of Lost Trail Pass, the immensely popular Chief Joseph Ski trails opened officially Monday, though there has been plenty of activity up there already. Starting this week, the Bitterroot Cross Country Ski Club is grooming the over 15 miles of cross-country ski trails and more than 20 miles of "multi-use" trails for skate skiing, snow shoeing, dog sledding and more.

At mid-valley, the Bitterroot Ridgerunners are grooming more than 50 miles of trails each week in the Skalkaho, Rye Creek, Lost Horse and Lost Trail areas.

Both groups are working with the Bitterroot National Forest, according to Public Affairs Officer Tod McKay, who said one set of trails is not being groomed this year. Those trails are just south of Lake Como. The Como Trails Club had worked with the Forest Service on establishing about 30 miles of trails in that area, but the club has not been able to continue grooming this year.

And, for the downhill skiers, Lost Trail Powder Mountain will open for its initial weekend December 4. Recent tree thinning has opened up some new areas on the ski area.

For cross country skiers, check Bitterroot Cross Country Ski website

Snowmobilers can find conditions at the Bitterroot Ridgerunners site.

And Lost Trail Powder Mountain has their website, too.