Grand Rapids Gymnastics Share: Fitness Visit Website Request Info 1601 Galbraith Suite 301 Grand Rapids, MI 49546 Facebook About Map About Our highly trained staff and our 19,000 square foot state-of-the-art facility make us the “activity of choice” in Grand Rapids. GRG is unlike any other gym in West Michigan. What makes us so special? The people, curriculum, and the fun! What's Nearby? Distance: 5 10 15 20 25 50 mi.