Start in Town and get a serious bike ride in, or start at the trailhead 3 miles up Kebler. This is Gunnison County SNOtrackers country, and they do the grooming up this way. Head up Kebler, then Splains, then over to Lily and down the steep (fun as can be) descent, back to Kebler and finish the loop. Or bust up to Lake Irwin and get some mad miles in from the grooming that SNOtrackers does, along with Irwin Guides.
Just remember to be cool to other users, and this is very well recognized motorized corridor. So ride single file, keep your head up, and respect all that out there.
This loop is also a great skate skiing/nordic loop, especially if you catch it just after they groom and the snow sets up crazy good overnight.