Welcome to Olympia Gymnastics & Ninja City Mid Rivers!

At Olympia Mid Rivers, we are committed to Olympia’s mission – creating happy, healthy, confident children by creating pathways to success with movement, gymnastics, and ninja. We provide the highest quality gymnastic and ninja programs available. We offer a wide variety of classes for children aged walking through teens. 

Our Programs & Special Events:

  • Preschool & Kinder Bee Gymnastics
  • Girls Gymnastics Classes
  • Boys Gymnastics Classes
  • Flipz Tumbling Classes
  • Ninja Classes at Ninja City
  • Homeschool Gymnastics
  • Girls Competitive Team
  • Field Trips
  • Birthday Parties
  • Kid’s Night Out
  • School Holiday Camp
  • Summer Camp
  • Private Lessons
  • Open Gym

We have been serving the St. Charles, St. Peters, and O’Fallon area since 1983. Formerly known as Olympiad Olde Towne in Cave Springs, we moved into our state of the art 20,000 square foot facility near Mid Rivers Mall in September 2008.

We are proud to be a part of the growing St. Charles County community (St. Charles, St. Peters, O’Fallon, Wentzville and Lake St. Louis). We look forward to being a part of helping to build happy, healthy, and confident children for many years to come! 

Office Hours
Monday 9:00a-8:30p
Tuesday 9:00a-8:00p
Wednesday 2:30p-8:30p
Thursday 9:00a-8:00p
Friday Closed
Saturday 9:00a-12:00p
Sunday Closed

    Olympia is an amazing facility. I now have had three children take gymnastics classes there and they have all loved it. The equipment is all well maintained and the facility itself is very clean, with sanitizing/disinfection practices strictly adhered to. The teachers make learning fun while gently nudging the kids out of their comfort zone to achieve their goals.
    Angela Edwards

    From Google, ⭐️⭐️⭐️⭐️⭐️

    We went to the Tumble- Bee class when my daughter was a toddler and she really liked it a lot. The teachers were all very sweet and the activities they had each week were very thought out. We will be returning again in the fall!
    Chris Tina

    From Google, ⭐️⭐️⭐️⭐️⭐️

    My 10 year old daughter takes gymnastics classes here. The staff is wonderful, coaches are kind and encouraging, the location is clean and the section for parents to watch is comfortable. Highly recommend you to contact them if your looking to have your child enroll in gymnastics.
    Kabrena

    From Google, ⭐️⭐️⭐️⭐️⭐️

    Meet the Manager

    Kelli Sterling

    Kelli began her career with Olympia at our Mid Rivers location in 2005 as a preschool instructor. Her talents quickly led her to be promoted to Preschool Director. She eventually switched over to the administration side of things, becoming Office Manager. In 2021 Kelli accepted the Gym Manger position where she will be able to utilize her diverse knowledge to the benefit of the facility. Gymnastics has been a passion of Kelli’s since she was a little girl. All four of her children have grown up in the gym and she looks forward to introducing her grandchildren to the sport. Kelli is excited to continue to grow in the industry and with Olympia.