Colossal Fitness LLC Share: Fitness Programs Colossal Fitness LLC Visit Website 6011 Watson Blvd 350 Byron, GA 31008 (478) 662-9470 LinkedIn Facebook Instagram Google+ About Map About Colossal Fitness is a boutique training center built on faith, community, and real results. What started in a garage has become one of Middle Georgia’s most trusted fitness homes offering private 1-on What's Nearby? Distance: 5 10 15 20 25 50 mi.