Crested Butte Nordic Center’s trail system and Crested Butte Mountain Resort (CBMR) are the best places for a consistent fat biking snow surface. The Nordic Center requires you to have a trail pass (either a season pass or day pass), and fat bikes are limited to the trails on the east side of their grooming area. Although its a little pricier, this is the best option for beginners since it’s mostly flat and the trails are groomed almost every day.
Fat biking on Mt. Crested Butte requires an uphill pass and is only allowed before and after hours. Although the climbs are steep in places, the snow is fantastic and well-packed, making for a consistent riding surface. Consult the uphill guide on CBMR’s website for maps and other information.