Leavenworth High School football coach Mark Littrell announced Sunday on Twitter that he is retiring.

“After over 40 years of coaching,” Littrell said in the tweet. “I have decided to retire as Head Football Coach at Leavenworth HS to work for Kansas Turf. I want to thank my family for their great support and love. I also want to thank all of my former and current players, coaches, and administrators.”

Littrell was named the head coach of the Pioneers in March 2013 after coaching as an assistant at Richland High and Birdville High in Texas. Littrell also coached at Olathe South and in St. Joseph, Missouri. In 2017, Littrell was inducted into the Grater Kansas City Football Coaches Association Hall of Fame at the 2017 Papa John’s Kansas vs. Missouri All-Star Game. A year later, Littrell was the head coach in the 2018 BeYOUnion.com Kansas vs. Missouri All-Star Game at Leavenworth High School and led the Kansas team to a 30-0 win.

The Pioneers finished the 2018 season at 1-8.