Northern and Central Rockies are 130 % of normal snow pack. We received over 14 inches of snow last night. Some general guidelines - the Colorado Division of a Wildlife treats a snow cat as a snowmobile thus requires a snowmobile permit to operate. Wilderness areas are off limits. I live in Pike National Forest and all of the trails are open except for those marked "no snowmobiles" with cats they prefer a minimum of 6 inches. There are hundreds of miles of marked and groomed trails in Colorado. Suggest you Google Cottonwood Pass, Tin Cup Pass, Ophir Creek. I am sure there are others on this forum that can chime in on areas to ride in Northern Colorado and over in the Gunnison / Crested Butte area.