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Calvin University

Dan Rietberg

  • Title
    Assistant Coach
Coach Rietberg enters his second year as an assistant at Calvin University, working with both the Men's and Women's programs. During his first season, the Women's cross country team finished 21st as a team at the NCAA Division III Cross Country National Championships, led by Sophie Bull’s 5th place All-American performance. Both Men's and Women's Track and Field teams captured conference titles during the Indoor season. The national meet was highlighted by Abe VanDuinen’s All-American performance in the 800 meters, followed shortly by Sophie Bull’s exhilarating finish and individual national championship in the 3000 Meter race. During the 2026 Outdoor Track and Field season, both the Men's and Women's teams again won conference championships. Sophie Bull won her 2nd individual national title in the 3000 Meter Steeplechase, followed by an All American performance in the 5000 Meters which were both key performances to help the Women's team earn 4th place, the first podium finish since 2007.

Before coming to Calvin, he worked as an assistant for NCAA DII Grand Valley State University. During his time there the Women’s team captured national titles in the 2023 Cross Country season, and the 2025 Outdoor Track and Field season. On top of countless All American performances, Rietberg worked with individual national champions Caleb Futter in the Mile, Lauren Kiley in Cross Country, and Klaudia O’Malley in the 1500 Meters. 

In 2023 he filled in as the Interim Head Distance Coach at Cornerstone University. Rietberg oversaw successful seasons that included Luke Pohl’s All American performance in the outdoor 5000 Meters, and Anna Martin’s Indoor national runner-up finish in the 3000 Meter race. 

Prior to that, Rietberg was the head coach for the Boys' and Girls' cross country teams at East Grand Rapids High School. During his time there they won State Championships as a team in 2018, 2019, and 2021. The 2019 Girls' team set the Division 2 state record for lowest point total in State Final history. He also coached both the Boys' and Girls' individual state champion in cross country for the 2019 season. 

Rietberg began his coaching career as an assistant at Grand Rapids Christian High School. They won the Boys Cross Country state championship in 2014, and the Girls state championships in 2010, 2013, and 2014.

Coach Rietberg lives in Grand Rapids with his wife, Becca, and daughter, Cohen.Â