CrossFit Marysville was started in January, 2010 and has grown from a small unknown Affiliate, to one of the most successful CrossFit Affiliates in the NW. We have an amazing staff of coaches whoâs sole desire is to help you improve your fitness goals, no matter what they are. We have worked with every day âsoccer momâsâ along with world class athletes, and take pride in being able to help you reach your goals.