Our Story

My name is Mike Ratnofsky and along with my wife, Kristin, we are the owners of CrossFit Cornelius, Hybrid|FIT and OnUp Training.

We just wanted to take a second and say hello and welcome you to the OnUp community!

With over 25 years in the fitness industry, our life's mission has led us to work tirelessly to learn, test and implement our fitness training methodology to expand our sphere of influence and help as many people as possible. We have coached everyone from fitness enthusiasts to professional athletes to CrossFit Games competitors and everything in between. We want YOU to become healthier, fitter, stronger, happier, compete in a sport, get back into shape and attain countless other goals. 

As busy parents and business owners, we understand the importance of convenience when it comes to finding a fitness program. In fact, our first gym, CrossFit Cornelius, was born in our garage. A few friends came over to workout and that small group turned into 100. Our first brick and mortar was born from that garage gym. Despite building our own facility, we never lost sight of the importance of the home gym and still use ours multiple times a week to help ensure we get our fitness in. 

We want to give people affordable access to daily workouts that are appropriate for all goals and levels. We wanted to offer a virtual subscription program for anyone who is unable to work out with our expert coaches in person at our two locations in Cornelius, North Carolina. So if you are looking to get in shape, tone up and compete in a sport, we have the program for you.

OnUp is so much more than a gym.....

We are proud to be a part of a community built on  positivity, support, education, accountability and encouragement!

We aim to live....

'Onward and Upward'

We want to thank you for taking the time to find out more about us and welcome you to the OnUp community. This is the first step you can take in your journey to improving your fitness level, overall wellness and potentially joining a supportive community of people looking to do the same thing.


Mike & Kristin Ratnofsky
Founders, OnUp Training


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