In 2000, Kenseth married Katie Martin, also from Cambridge. Kenseth has a son, Ross Kenseth, from a previous relationship. Matt and Katie have three daughters, Kaylin Nicola born on July 6, 2009, two days after Kenseth finished eighth in the Coke Zero 400 at Daytona, Grace Katherine, born on February 22, 2011, two days after the Daytona 500 Kenseth had finished 34th in the race after being involved in two crashes.
and Clara Mae was born on March 25, 2014 two days after the Auto Club 400.
Ross raced a legends car for one year in Wisconsin before starting in limited late model racing as a 14-year-old.
As a 16-year-old, Ross won the 2009 championship in the Big 8 Series, a late model touring series in Wisconsin and northern Illinois. He qualified the second fastest for the Snowball Derby in December 2009.
* Season still in progress. 1 Ineligible for series championship points.