マイルチャンピオンシップ
Earnhardt is a co-owner of JR Motorsports, a NASCAR Xfinity and Truck Series team. In 2014, the team won their first NASCAR national championship, as Chase Elliott drove the No. 9 NAPA Auto Parts car to the 2014 NASCAR Nationwide Series championship. In 2015, JR Motorsports began fielding a part-time team in the Truck Series, with Cole Custer driving the No. 00 Haas Automation Chevrolet Silverado in 10 races. Kasey Kahne also drove part-time in the Truck Series, with the two drivers winning at Gateway Motorsports Park and Charlotte, respectively. JR Motorsports also has a very successful regional late model program, with Josh Berry capturing the 2012 Motor Mile Championship in the Whelen All-American series. Berry was also able to win a second track championship at Hickory Motor Speedway.