Good Morning Jenifer, Yellowstone is one of my favorite places. I visit it every summer. I was watching Christmas in Yellowstone last night on TV. Have a very Merry Christmas to you and your family.
Michael, they definitely have groomed trails, check out the link above for more information on those.
Scott, We had a wonderful Christmas, didn't turn on my computer for the first time in forever! Hope your was fantastic.
Jenifer~I've always been a big fan of Yellowstone, I've been there a few times in the summer months, going there in the winter sounds like it might be a fun adventure. Do you know if they have groomed trails for cross-country skiing? Have a very Merry Christmas!