The Wasatch County Sheriff's Office said Block was riding with a group in the Mill Hollow area but alone on a steep slope when his snowmobile upended and landed on him.
He was 55 years old.
Block is survived by his wife and three children, one of whom is also a driver.
This is how some mornings at my ranch in Utah look this time of year – freshly coated with snow! Luckily we have the Ski-doo sleds, @CanAm Mavericks (one on tracks!) and Defender, and the Kubota machinery to dig us out and keep the property maintained. pic.twitter.com/LXJG1A6yPr
— Ken Block (@kblock43) December 29, 2022