Downtown YMCA Leadership Team

Sarah Wittrock

Senior Program Director


Sarah has been with the Sioux Falls Family YMCA since July 2013, previously serving with the YMCA of Greater Kansas City.  After receiving her degree in elementary education, Sarah served several churches as a Director of Christian Education overseeing and developing children's, youth, and adult programming in Iowa, Kansas and Michigan. She has a passion for youth and helping them to grow mentally, physically and spiritually.  In her spare time, Sarah enjoys spending time outdoors camping, hiking and biking with her husband, Chris, and four-legged baby, Grace Rose.

Marcus Molbeck

Youth Sports and Recreation Coordinator


Marcus attended Minnesota State University, Mankato and received a Bachelor’s Degree in Recreation, Parks, and Leisure Services and a Minor in Non-Profit Leadership. Originally from Milwaukee, Wisconsin he moved to Sioux Falls 2 years ago. Back in Milwaukee he has worked in the Recreational field for over ten years; working for the Milwaukee Recreation Department and the YMCA in Waukesha, WI. He has a passion for sports and getting all youth involved in sports and recreation. Sports has played a large role in his life and hopes he can pass that down to the younger generation. While he is not at work enjoys the outdoors with his dog and watching the Milwaukee Bucks.

Terence Williams

Youth & Teen Program Coordinator


Terence attended Oklahoma Panhandle State University and graduated with a Bachelor of Science in Health & Physical Education. Over the last 5 years, Terence resided in Guymon, Oklahoma, while being there, he gained a passion for the Lord, and mentoring youth. In his free time, he loves to be around family, watch the San Antonio Spurs, and go fishing.