text: where in the world must you travel to downhill ski over all 12 months of the year?   you do not have to go far at all.  there are places both here in the usa and in canada which are open year round.  most places actually close because they don't have business, not because there is not enough snow.  i've listed places which are open year round on this continent!  mammoth mountain, california mt. bachelor, oregon mt. hood, oregon timberline, oregon apahahoe basin, colorado tuckerman ravine, new hampshire (although this is one you  have to hike up... no lift service) whistler-blackcomb, b.c.-canada   most of the pro riders and camps are in either mammoth, mt. hood, or whistler.