Welcome to Onyx Athletics conveniently located off of Main Street in Windsor Colorado. Our passion is to help our clients become the best and strongest versions of themselves. Whether your goal is to lose weight, get stronger, or simply maintain a healthy lifestyle, we can help you. We offer personal training services, group classes, and 24-7 key fob accessed open gym. We have a wide array of cardio equipment, free weights, astroturf,  and weight machines to suit everyone’s workout needs.

At Onyx Athletics will find an inviting community of like-minded people all striving for the same goal.